Solve Using the Square Root Property (x-7)^2=36

${(x - 7)}^{2} = 36$

Step 1

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$x - 7 = \pm \sqrt{36}$

Step 2

Simplify $\pm \sqrt{36}$ .

Rewrite $36$ as $6^{2}$ .

$x - 7 = \pm \sqrt{6^{2}}$

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

$x - 7 = \pm 6$

Step 3

The complete solution is the result of both the positive and negative portions of the solution.

First, use the positive value of the $\pm$ to find the first solution.

$x - 7 = 6$

Move all terms not containing $x$ to the right side of the equation.

Add $7$ to both sides of the equation.

$x = 6 + 7$

Add $6$ and $7$ .

$x = 13$

Next, use the negative value of the $\pm$ to find the second solution.

$x - 7 = - 6$

Move all terms not containing $x$ to the right side of the equation.

Add $7$ to both sides of the equation.

$x = - 6 + 7$

Add $- 6$ and $7$ .

$x = 1$

The complete solution is the result of both the positive and negative portions of the solution.

$x = 13, 1$