Find the Equation Given the Roots -1/4 , square root of 7 , -6i

$- \frac{1}{4}$ , $\sqrt{7}$ , $- 6 i$

Step 1

Roots are the points where the graph intercepts with the x-axis $(y = 0)$ .

$y = 0$ at the roots

Step 2

The root at $x = - \frac{1}{4}$ was found by solving for $x$ when $x - (- \frac{1}{4}) = y$ and $y = 0$ .

The factor is $x + \frac{1}{4}$

Step 3

The root at $x = \sqrt{7}$ was found by solving for $x$ when $x - (\sqrt{7}) = y$ and $y = 0$ .

The factor is $x - \sqrt{7}$

Step 4

The root at $x = - 6 i$ was found by solving for $x$ when $x - (- 6 i) = y$ and $y = 0$ .

The factor is $x + 6 i$

Step 5

The root at $x = 6 i$ was found by solving for $x$ when $x - (6 i) = y$ and $y = 0$ .

The factor is $x - 6 i$

Step 6

Combine all the factors into a single equation.

$y = (x + \frac{1}{4}) (x - \sqrt{7}) (x + 6 i) (x - 6 i)$

Step 7

Multiply all the factors to simplify the equation $y = (x + \frac{1}{4}) (x - \sqrt{7}) (x + 6 i) (x - 6 i)$ .

Expand $(x + \frac{1}{4}) (x - \sqrt{7})$ using the FOIL Method.

Apply the distributive property.

$y = (x (x - \sqrt{7}) + \frac{1}{4} \cdot (x - \sqrt{7})) (x + 6 i) (x - 6 i)$

Apply the distributive property.

$y = (x \cdot x + x (- \sqrt{7}) + \frac{1}{4} \cdot (x - \sqrt{7})) (x + 6 i) (x - 6 i)$

Apply the distributive property.

$y = (x \cdot x + x (- \sqrt{7}) + \frac{1}{4} x + \frac{1}{4} \cdot (- \sqrt{7})) (x + 6 i) (x - 6 i)$

Simplify and combine like terms.

Simplify each term.

Multiply $x$ by $x$ .

$y = (x^{2} + x (- \sqrt{7}) + \frac{1}{4} x + \frac{1}{4} \cdot (- \sqrt{7})) (x + 6 i) (x - 6 i)$

Combine $\frac{1}{4}$ and $x$ .

$y = (x^{2} + x (- \sqrt{7}) + \frac{x}{4} + \frac{1}{4} \cdot (- \sqrt{7})) (x + 6 i) (x - 6 i)$

Combine $\frac{1}{4}$ and $\sqrt{7}$ .

$y = (x^{2} + x (- \sqrt{7}) + \frac{x}{4} - \frac{\sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Subtract $\frac{\sqrt{7}}{4}$ from $x (- \sqrt{7})$ .

Reorder $x$ and $- 1$ .

$y = (x^{2} + \frac{x}{4} - 1 \cdot (x \sqrt{7}) - \frac{\sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

To write $- 1 \cdot x \sqrt{7}$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$y = (x^{2} + \frac{x}{4} - 1 \cdot (x \sqrt{7}) \cdot \frac{4}{4} - \frac{\sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Combine $- 1 \cdot x \sqrt{7}$ and $\frac{4}{4}$ .

$y = (x^{2} + \frac{x}{4} + \frac{- 1 \cdot (x \sqrt{7}) \cdot 4}{4} - \frac{\sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Combine the numerators over the common denominator.

$y = (x^{2} + \frac{x}{4} + \frac{- 1 \cdot (x \sqrt{7}) \cdot 4 - \sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

To write $x^{2}$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$y = (\frac{x}{4} + x^{2} \cdot \frac{4}{4} + \frac{- 1 \cdot (x \sqrt{7}) \cdot 4 - \sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Combine $x^{2}$ and $\frac{4}{4}$ .

$y = (\frac{x}{4} + \frac{x^{2} \cdot 4}{4} + \frac{- 1 \cdot (x \sqrt{7}) \cdot 4 - \sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Combine the numerators over the common denominator.

$y = (\frac{x}{4} + \frac{x^{2} \cdot 4 - 1 \cdot (x \sqrt{7}) \cdot 4 - \sqrt{7}}{4}) (x + 6 i) (x - 6 i)$

Combine the numerators over the common denominator.

$y = \frac{x + x^{2} \cdot 4 - 1 \cdot (x \sqrt{7}) \cdot 4 - \sqrt{7}}{4} \cdot ((x + 6 i) (x - 6 i))$

Simplify the numerator.

Reorder terms.

$y = \frac{4 x^{2} - 1 \cdot (4 x \sqrt{7}) + x - \sqrt{7}}{4} \cdot ((x + 6 i) (x - 6 i))$

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

$y = \frac{(4 x^{2} - 1 \cdot (4 x \sqrt{7})) + x - \sqrt{7}}{4} \cdot ((x + 6 i) (x - 6 i))$

Factor out the greatest common factor (GCF) from each group.

$y = \frac{4 x (x - \sqrt{7}) + 1 (x - \sqrt{7})}{4} \cdot ((x + 6 i) (x - 6 i))$

Factor the polynomial by factoring out the greatest common factor, $x - \sqrt{7}$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1)}{4} \cdot ((x + 6 i) (x - 6 i))$

Simplify terms.

Apply the distributive property.

$y = (\frac{(x - \sqrt{7}) (4 x + 1)}{4} \cdot x + \frac{(x - \sqrt{7}) (4 x + 1)}{4} \cdot (6 i)) (x - 6 i)$

Combine $\frac{(x - \sqrt{7}) (4 x + 1)}{4}$ and $x$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1)}{4} \cdot (6 i)) (x - 6 i)$

Cancel the common factor of $2$ .

Factor $2$ out of $4$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1)}{2 (2)} \cdot (6 i)) (x - 6 i)$

Factor $2$ out of $6 i$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1)}{2 (2)} \cdot (2 (3 i))) (x - 6 i)$

Cancel the common factor.

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1)}{2 \cdot 2} \cdot (2 (3 i))) (x - 6 i)$

Rewrite the expression.

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1)}{2} \cdot (3 i)) (x - 6 i)$

Combine $3$ and $\frac{(x - \sqrt{7}) (4 x + 1)}{2}$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{3 ((x - \sqrt{7}) (4 x + 1))}{2} \cdot i) (x - 6 i)$

Combine $\frac{3 ((x - \sqrt{7}) (4 x + 1))}{2}$ and $i$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{3 ((x - \sqrt{7}) (4 x + 1)) i}{2}) (x - 6 i)$

To write $\frac{3 (x - \sqrt{7}) (4 x + 1) i}{2}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{3 (x - \sqrt{7}) (4 x + 1) i}{2} \cdot \frac{2}{2}) (x - 6 i)$

Write each expression with a common denominator of $4$ , by multiplying each by an appropriate factor of $1$ .

Multiply $\frac{3 (x - \sqrt{7}) (4 x + 1) i}{2}$ by $\frac{2}{2}$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{3 (x - \sqrt{7}) (4 x + 1) i \cdot 2}{2 \cdot 2}) (x - 6 i)$

Multiply $2$ by $2$ .

$y = (\frac{(x - \sqrt{7}) (4 x + 1) x}{4} + \frac{3 (x - \sqrt{7}) (4 x + 1) i \cdot 2}{4}) (x - 6 i)$

Combine the numerators over the common denominator.

$y = \frac{(x - \sqrt{7}) (4 x + 1) x + 3 (x - \sqrt{7}) (4 x + 1) i \cdot 2}{4} \cdot (x - 6 i)$

Simplify the numerator.

Factor $(x - \sqrt{7}) (4 x + 1)$ out of $(x - \sqrt{7}) (4 x + 1) x + 3 (x - \sqrt{7}) (4 x + 1) i \cdot 2$ .

Factor $(x - \sqrt{7}) (4 x + 1)$ out of $(x - \sqrt{7}) (4 x + 1) x$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x) + 3 (x - \sqrt{7}) (4 x + 1) i \cdot 2}{4} \cdot (x - 6 i)$

Factor $(x - \sqrt{7}) (4 x + 1)$ out of $3 (x - \sqrt{7}) (4 x + 1) i \cdot 2$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x) + (x - \sqrt{7}) (4 x + 1) ((3) i \cdot 2)}{4} \cdot (x - 6 i)$

Factor $(x - \sqrt{7}) (4 x + 1)$ out of $(x - \sqrt{7}) (4 x + 1) (x) + (x - \sqrt{7}) (4 x + 1) ((3) i \cdot 2)$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + (3) i \cdot 2)}{4} \cdot (x - 6 i)$

Multiply $2$ by $3$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{4} \cdot (x - 6 i)$

Simplify terms.

Apply the distributive property.

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{4} \cdot x + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{4} \cdot (- 6 i)$

Simplify terms.

Combine $\frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{4}$ and $x$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{4} \cdot (- 6 i)$

Cancel the common factor of $2$ .

Factor $2$ out of $4$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{2 (2)} \cdot (- 6 i)$

Factor $2$ out of $- 6 i$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{2 (2)} \cdot (2 (- 3 i))$

Cancel the common factor.

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{2 \cdot 2} \cdot (2 (- 3 i))$

Rewrite the expression.

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{2} \cdot (- 3 i)$

Combine $- 3$ and $\frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i)}{2}$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{- 3 ((x - \sqrt{7}) (4 x + 1) (x + 6 i))}{2} \cdot i$

Combine $\frac{- 3 ((x - \sqrt{7}) (4 x + 1) (x + 6 i))}{2}$ and $i$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} + \frac{- 3 ((x - \sqrt{7}) (4 x + 1) (x + 6 i)) i}{2}$

Move the negative in front of the fraction.

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} - \frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{2}$

To write $- \frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{2}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} - \frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{2} \cdot \frac{2}{2}$

Write each expression with a common denominator of $4$ , by multiplying each by an appropriate factor of $1$ .

Multiply $\frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{2}$ by $\frac{2}{2}$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} - \frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i \cdot 2}{2 \cdot 2}$

Multiply $2$ by $2$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x}{4} - \frac{3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i \cdot 2}{4}$

Combine the numerators over the common denominator.

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x - 3 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i \cdot 2}{4}$

Multiply $2$ by $- 3$ .

$y = \frac{(x - \sqrt{7}) (4 x + 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Simplify each term.

Expand $(x - \sqrt{7}) (4 x + 1)$ using the FOIL Method.

Apply the distributive property.

$y = \frac{(x (4 x + 1) - \sqrt{7} (4 x + 1)) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{(x (4 x) + x \cdot 1 - \sqrt{7} (4 x + 1)) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{(x (4 x) + x \cdot 1 - \sqrt{7} (4 x) - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Simplify each term.

Rewrite using the commutative property of multiplication.

$y = \frac{(4 x \cdot x + x \cdot 1 - \sqrt{7} (4 x) - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{(4 (x \cdot x) + x \cdot 1 - \sqrt{7} (4 x) - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{(4 x^{2} + x \cdot 1 - \sqrt{7} (4 x) - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $1$ .

$y = \frac{(4 x^{2} + x - \sqrt{7} (4 x) - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $4$ by $- 1$ .

$y = \frac{(4 x^{2} + x - 4 \sqrt{7} x - \sqrt{7} \cdot 1) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $- 1$ by $1$ .

$y = \frac{(4 x^{2} + x - 4 \sqrt{7} x - \sqrt{7}) (x + 6 i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Expand $(4 x^{2} + x - 4 \sqrt{7} x - \sqrt{7}) (x + 6 i)$ by multiplying each term in the first expression by each term in the second expression.

$y = \frac{(4 x^{2} x + 4 x^{2} (6 i) + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Simplify each term.

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{(4 (x \cdot x^{2}) + 4 x^{2} (6 i) + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$y = \frac{(4 (x \cdot x^{2}) + 4 x^{2} (6 i) + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{(4 x^{1 + 2} + 4 x^{2} (6 i) + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Add $1$ and $2$ .

$y = \frac{(4 x^{3} + 4 x^{2} (6 i) + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $6$ by $4$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x \cdot x + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + x (6 i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Move $6$ to the left of $x$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + 6 \cdot (x i) - 4 \sqrt{7} x \cdot x - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + 6 x i - 4 \sqrt{7} (x \cdot x) - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + 6 x i - 4 \sqrt{7} x^{2} - 4 \sqrt{7} x (6 i) - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $6$ by $- 4$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + 6 x i - 4 \sqrt{7} x^{2} - 24 \sqrt{7} x i - \sqrt{7} x - \sqrt{7} (6 i)) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $6$ by $- 1$ .

$y = \frac{(4 x^{3} + 24 x^{2} i + x^{2} + 6 x i - 4 \sqrt{7} x^{2} - 24 \sqrt{7} x i - \sqrt{7} x - 6 \sqrt{7} i) x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{4 x^{3} x + 24 x^{2} i x + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Simplify.

Multiply $x^{3}$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 (x \cdot x^{3}) + 24 x^{2} i x + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x^{3}$ .

Raise $x$ to the power of $1$ .

$y = \frac{4 (x \cdot x^{3}) + 24 x^{2} i x + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{1 + 3} + 24 x^{2} i x + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Add $1$ and $3$ .

$y = \frac{4 x^{4} + 24 x^{2} i x + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 (x \cdot x^{2}) i + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$y = \frac{4 x^{4} + 24 (x \cdot x^{2}) i + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{1 + 2} i + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Add $1$ and $2$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x^{2}$ by $x$ by adding the exponents.

Multiply $x^{2}$ by $x$ .

Raise $x$ to the power of $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{2} x + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{2 + 1} + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Add $2$ and $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x i x - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 (x \cdot x) i - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{2} x - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} (x \cdot x^{2}) - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} (x \cdot x^{2}) - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{1 + 2} - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Add $1$ and $2$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x i x - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} (x \cdot x) i - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x \cdot x - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} (x \cdot x) - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 6 (x - \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 x - 6 (- \sqrt{7})) (4 x + 1) (x + 6 i) i}{4}$

Multiply $- 1$ by $- 6$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 x + 6 \sqrt{7}) (4 x + 1) (x + 6 i) i}{4}$

Expand $(- 6 x + 6 \sqrt{7}) (4 x + 1)$ using the FOIL Method.

Apply the distributive property.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 x (4 x + 1) + 6 \sqrt{7} (4 x + 1)) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 x (4 x) - 6 x \cdot 1 + 6 \sqrt{7} (4 x + 1)) (x + 6 i) i}{4}$

Apply the distributive property.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 x (4 x) - 6 x \cdot 1 + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Simplify each term.

Rewrite using the commutative property of multiplication.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 \cdot (4 x \cdot x) - 6 x \cdot 1 + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 \cdot (4 (x \cdot x)) - 6 x \cdot 1 + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 6 \cdot (4 x^{2}) - 6 x \cdot 1 + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $- 6$ by $4$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{2} - 6 x \cdot 1 + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $- 6$ by $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{2} - 6 x + 6 \sqrt{7} (4 x) + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $4$ by $6$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{2} - 6 x + 24 \sqrt{7} x + 6 \sqrt{7} \cdot 1) (x + 6 i) i}{4}$

Multiply $6$ by $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{2} - 6 x + 24 \sqrt{7} x + 6 \sqrt{7}) (x + 6 i) i}{4}$

Expand $(- 24 x^{2} - 6 x + 24 \sqrt{7} x + 6 \sqrt{7}) (x + 6 i)$ by multiplying each term in the first expression by each term in the second expression.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{2} x - 24 x^{2} (6 i) - 6 x \cdot x - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Simplify each term.

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 (x \cdot x^{2}) - 24 x^{2} (6 i) - 6 x \cdot x - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{1 + 2} - 24 x^{2} (6 i) - 6 x \cdot x - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Add $1$ and $2$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 24 x^{2} (6 i) - 6 x \cdot x - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $6$ by $- 24$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x \cdot x - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 (x \cdot x) - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x^{2} - 6 x (6 i) + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $6$ by $- 6$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x^{2} - 36 x i + 24 \sqrt{7} x \cdot x + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x^{2} - 36 x i + 24 \sqrt{7} (x \cdot x) + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $x$ by $x$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x^{2} - 36 x i + 24 \sqrt{7} x^{2} + 24 \sqrt{7} x (6 i) + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $6$ by $24$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + (- 24 x^{3} - 144 x^{2} i - 6 x^{2} - 36 x i + 24 \sqrt{7} x^{2} + 144 \sqrt{7} x i + 6 \sqrt{7} x + 6 \sqrt{7} (6 i)) i}{4}$

Multiply $6$ by $6$ .

Apply the distributive property.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i i - 6 x^{2} i - 36 x i i + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Simplify.

Multiply $- 144 x^{2} i i$ .

Raise $i$ to the power of $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} (i i) - 6 x^{2} i - 36 x i i + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Raise $i$ to the power of $1$ .

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i^{1 + 1} - 6 x^{2} i - 36 x i i + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Add $1$ and $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i^{2} - 6 x^{2} i - 36 x i i + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Multiply $- 36 x i i$ .

Raise $i$ to the power of $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i^{2} - 6 x^{2} i - 36 x (i i) + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Raise $i$ to the power of $1$ .

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i^{2} - 6 x^{2} i - 36 x i^{1 + 1} + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Add $1$ and $1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} i^{2} - 6 x^{2} i - 36 x i^{2} + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i i + 6 \sqrt{7} x i + 36 \sqrt{7} i i}{4}$

Multiply $144 \sqrt{7} x i i$ .

Raise $i$ to the power of $1$ .

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

Add $1$ and $1$ .

Multiply $36 \sqrt{7} i i$ .

Raise $i$ to the power of $1$ .

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

Add $1$ and $1$ .

Simplify each term.

Rewrite $i^{2}$ as $- 1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i - 144 x^{2} \cdot - 1 - 6 x^{2} i - 36 x i^{2} + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i^{2} + 6 \sqrt{7} x i + 36 \sqrt{7} i^{2}}{4}$

Multiply $- 1$ by $- 144$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i + 144 x^{2} - 6 x^{2} i - 36 x i^{2} + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i^{2} + 6 \sqrt{7} x i + 36 \sqrt{7} i^{2}}{4}$

Rewrite $i^{2}$ as $- 1$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i + 144 x^{2} - 6 x^{2} i - 36 x \cdot - 1 + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i^{2} + 6 \sqrt{7} x i + 36 \sqrt{7} i^{2}}{4}$

Multiply $- 1$ by $- 36$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i + 144 x^{2} - 6 x^{2} i + 36 x + 24 \sqrt{7} x^{2} i + 144 \sqrt{7} x i^{2} + 6 \sqrt{7} x i + 36 \sqrt{7} i^{2}}{4}$

Rewrite $i^{2}$ as $- 1$ .

Multiply $- 1$ by $144$ .

$y = \frac{4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i + 144 x^{2} - 6 x^{2} i + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i + 36 \sqrt{7} i^{2}}{4}$

Rewrite $i^{2}$ as $- 1$ .

Multiply $- 1$ by $36$ .

Combine the opposite terms in $4 x^{4} + 24 x^{3} i + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x - 24 x^{3} i + 144 x^{2} - 6 x^{2} i + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}$ .

Subtract $24 x^{3} i$ from $24 x^{3} i$ .

$y = \frac{4 x^{4} + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 0 + 144 x^{2} - 6 x^{2} i + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Add $4 x^{4} + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x$ and $0$ .

$y = \frac{4 x^{4} + x^{3} + 6 x^{2} i - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} - 6 x^{2} i + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Subtract $6 x^{2} i$ from $6 x^{2} i$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} + 0 + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Add $4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2}$ and $0$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - 24 \sqrt{7} x^{2} i - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} + 36 x + 24 \sqrt{7} x^{2} i - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Add $- 24 \sqrt{7} x^{2} i$ and $24 \sqrt{7} x^{2} i$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} + 36 x + 0 - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Add $4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} + 36 x$ and $0$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} - 6 \sqrt{7} i x + 144 x^{2} + 36 x - 144 \sqrt{7} x + 6 \sqrt{7} x i - 36 \sqrt{7}}{4}$

Reorder the factors in the terms $- 6 \sqrt{7} i x$ and $6 \sqrt{7} x i$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} - 6 i x \sqrt{7} + 144 x^{2} + 36 x - 144 \sqrt{7} x + 6 i x \sqrt{7} - 36 \sqrt{7}}{4}$

Add $- 6 i x \sqrt{7}$ and $6 i x \sqrt{7}$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x + 0 - 36 \sqrt{7}}{4}$

Add $4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x$ and $0$ .

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x - 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x - 36 \sqrt{7}}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x - 144 \sqrt{7} x}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2} + 36 x}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2} + 144 x^{2}}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3} - \sqrt{7} x^{2}}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3}}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3} - 4 \sqrt{7} x^{3}}{4}$ into two fractions.

$y = \frac{4 x^{4} + x^{3}}{4} + \frac{- 4 \sqrt{7} x^{3}}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Split the fraction $\frac{4 x^{4} + x^{3}}{4}$ into two fractions.

$y = \frac{4 x^{4}}{4} + \frac{x^{3}}{4} + \frac{- 4 \sqrt{7} x^{3}}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $4$ .

Cancel the common factor.

$y = \frac{4 x^{4}}{4} + \frac{x^{3}}{4} + \frac{- 4 \sqrt{7} x^{3}}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Divide $x^{4}$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} + \frac{- 4 \sqrt{7} x^{3}}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $- 4$ and $4$ .

Factor $4$ out of $- 4 \sqrt{7} x^{3}$ .

$y = x^{4} + \frac{x^{3}}{4} + \frac{4 (- \sqrt{7} x^{3})}{4} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factors.

Factor $4$ out of $4$ .

$y = x^{4} + \frac{x^{3}}{4} + \frac{4 (- \sqrt{7} x^{3})}{4 (1)} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor.

$y = x^{4} + \frac{x^{3}}{4} + \frac{4 (- \sqrt{7} x^{3})}{4 \cdot 1} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Rewrite the expression.

$y = x^{4} + \frac{x^{3}}{4} + \frac{- \sqrt{7} x^{3}}{1} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Divide $- \sqrt{7} x^{3}$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} + \frac{- \sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Move the negative in front of the fraction.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + \frac{144 x^{2}}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $144$ and $4$ .

Factor $4$ out of $144 x^{2}$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + \frac{4 (36 x^{2})}{4} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factors.

Factor $4$ out of $4$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + \frac{4 (36 x^{2})}{4 (1)} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + \frac{4 (36 x^{2})}{4 \cdot 1} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Rewrite the expression.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + \frac{36 x^{2}}{1} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Divide $36 x^{2}$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + \frac{36 x}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $36$ and $4$ .

Factor $4$ out of $36 x$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + \frac{4 (9 x)}{4} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factors.

Factor $4$ out of $4$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + \frac{4 (9 x)}{4 (1)} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + \frac{4 (9 x)}{4 \cdot 1} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Rewrite the expression.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + \frac{9 x}{1} + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Divide $9 x$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x + \frac{- 144 \sqrt{7} x}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $- 144$ and $4$ .

Factor $4$ out of $- 144 \sqrt{7} x$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x + \frac{4 (- 36 \sqrt{7} x)}{4} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factors.

Factor $4$ out of $4$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x + \frac{4 (- 36 \sqrt{7} x)}{4 (1)} + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x + \frac{4 (- 36 \sqrt{7} x)}{4 \cdot 1} + \frac{- 36 \sqrt{7}}{4}$

Rewrite the expression.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x + \frac{- 36 \sqrt{7} x}{1} + \frac{- 36 \sqrt{7}}{4}$

Divide $- 36 \sqrt{7} x$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x + \frac{- 36 \sqrt{7}}{4}$

Cancel the common factor of $- 36$ and $4$ .

Factor $4$ out of $- 36 \sqrt{7}$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x + \frac{4 (- 9 \sqrt{7})}{4}$

Cancel the common factors.

Factor $4$ out of $4$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x + \frac{4 (- 9 \sqrt{7})}{4 (1)}$

Cancel the common factor.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x + \frac{4 (- 9 \sqrt{7})}{4 \cdot 1}$

Rewrite the expression.

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x + \frac{- 9 \sqrt{7}}{1}$

Divide $- 9 \sqrt{7}$ by $1$ .

$y = x^{4} + \frac{x^{3}}{4} - \sqrt{7} x^{3} - \frac{\sqrt{7} x^{2}}{4} + 36 x^{2} + 9 x - 36 \sqrt{7} x - 9 \sqrt{7}$

Step 8

Find the Equation Given the Roots -1/4 , square root of 7 , -6i

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