# How do you solve using the square root property (x + 8)^2 = 81?

Mar 30, 2018

$x = 1$ or $x = - 17$.

#### Explanation:

Take the square root of both sides.

$\sqrt{{\left(x + 8\right)}^{2}} = \pm \sqrt{81}$

$x + 8 = \pm 9$

$x = 1 \mathmr{and} - 17$

Hopefully this helps!