# How do you solve (x - 9) ^ { 2} - 4= 0?

Apr 17, 2018

$x = 11 , 7$

#### Explanation:

${\left(x - 9\right)}^{2} - 4 = 0$
${\left(x - 9\right)}^{2} = 4$
$\left(x - 9\right) = \pm \sqrt{4}$
$x - 9 = \pm 2$
$x = 11 , 7$
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