Solve Using the Quadratic Formula x^2-14x=-48

$x^{2} - 14 x = - 48$

Step 1

Add $48$ to both sides of the equation.

$x^{2} - 14 x + 48 = 0$

Step 2

Use the quadratic formula to find the solutions.

$\frac{- b \pm \sqrt{b^{2} - 4 (a c)}}{2 a}$

Step 3

Substitute the values $a = 1$ , $b = - 14$ , and $c = 48$ into the quadratic formula and solve for $x$ .

$\frac{14 \pm \sqrt{{(- 14)}^{2} - 4 \cdot (1 \cdot 48)}}{2 \cdot 1}$

Step 4

Simplify.

Simplify the numerator.

Raise $- 14$ to the power of $2$ .

$x = \frac{14 \pm \sqrt{196 - 4 \cdot 1 \cdot 48}}{2 \cdot 1}$

Multiply $- 4 \cdot 1 \cdot 48$ .

Multiply $- 4$ by $1$ .

$x = \frac{14 \pm \sqrt{196 - 4 \cdot 48}}{2 \cdot 1}$

Multiply $- 4$ by $48$ .

$x = \frac{14 \pm \sqrt{196 - 192}}{2 \cdot 1}$

Subtract $192$ from $196$ .

$x = \frac{14 \pm \sqrt{4}}{2 \cdot 1}$

Rewrite $4$ as $2^{2}$ .

$x = \frac{14 \pm \sqrt{2^{2}}}{2 \cdot 1}$

Pull terms out from under the radical, assuming positive real numbers.

$x = \frac{14 \pm 2}{2 \cdot 1}$

Multiply $2$ by $1$ .

$x = \frac{14 \pm 2}{2}$

Simplify $\frac{14 \pm 2}{2}$ .

$x = 7 \pm 1$

Step 5

The final answer is the combination of both solutions.

$x = 8, 6$