# How do you simplify sqrt(x -4 ) = 2?

Mar 28, 2017

$x = 8$
If $\sqrt{x - 4} = 2$
$\textcolor{w h i t e}{\text{XXX}} x - 4 = {2}^{2} = 4$
$\textcolor{w h i t e}{\text{XXX}} x = 8$