# If x^2=9, then what is the value of x?

Nov 1, 2016

$x = + 3 , x = - 3$

#### Explanation:

In ${x}^{2} = 9$ , you need to get rid of the power of 2 in order to isolate just $x$

This involves finding the square root. ${\sqrt{x}}^{2} = x$

However there are 2 possible answers to a square root, a positive or a negative answer.

$x = \pm \sqrt{9}$

$x = \pm 3$