Find the Roots (Zeros) 2x^2-x+6=-4x+8

$2 x^{2} - x + 6 = - 4 x + 8$

Step 1

Move all terms containing $x$ to the left side of the equation.

Add $4 x$ to both sides of the equation.

$2 x^{2} - x + 6 + 4 x = 8$

Add $- x$ and $4 x$ .

$2 x^{2} + 3 x + 6 = 8$

Step 2

Subtract $8$ from both sides of the equation.

$2 x^{2} + 3 x + 6 - 8 = 0$

Step 3

Subtract $8$ from $6$ .

$2 x^{2} + 3 x - 2 = 0$

Step 4

Factor by grouping.

For a polynomial of the form $a x^{2} + b x + c$ , rewrite the middle term as a sum of two terms whose product is $a \cdot c = 2 \cdot - 2 = - 4$ and whose sum is $b = 3$ .

Factor $3$ out of $3 x$ .

$2 x^{2} + 3 (x) - 2 = 0$

Rewrite $3$ as $- 1$ plus $4$

$2 x^{2} + (- 1 + 4) x - 2 = 0$

Apply the distributive property.

$2 x^{2} - 1 x + 4 x - 2 = 0$

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

$(2 x^{2} - 1 x) + 4 x - 2 = 0$

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

$x (2 x - 1) + 2 (2 x - 1) = 0$

Factor the polynomial by factoring out the greatest common factor, $2 x - 1$ .

$(2 x - 1) (x + 2) = 0$

Step 5

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$2 x - 1 = 0$

$x + 2 = 0$

Step 6

Set $2 x - 1$ equal to $0$ and solve for $x$ .

Set $2 x - 1$ equal to $0$ .

$2 x - 1 = 0$

Solve $2 x - 1 = 0$ for $x$ .

Add $1$ to both sides of the equation.

$2 x = 1$

Divide each term in $2 x = 1$ by $2$ and simplify.

Divide each term in $2 x = 1$ by $2$ .

$\frac{2 x}{2} = \frac{1}{2}$

Simplify the left side.

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{2 x}{2} = \frac{1}{2}$

Divide $x$ by $1$ .

$x = \frac{1}{2}$

Step 7

Set $x + 2$ equal to $0$ and solve for $x$ .

Set $x + 2$ equal to $0$ .

$x + 2 = 0$

Subtract $2$ from both sides of the equation.

$x = - 2$

Step 8

The final solution is all the values that make $(2 x - 1) (x + 2) = 0$ true.

$x = \frac{1}{2}, - 2$

Step 9

Find the Roots (Zeros) 2x^2-x+6=-4x+8

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