# How do you solve 36x^2 - 140 = 4?

Aug 8, 2016

$x = \pm 2$

#### Explanation:

$36 {x}^{2} - 140 = 4$
or
$36 {x}^{2} = 140 + 4$
or
$36 {x}^{2} = 144$
or
${x}^{2} = \frac{144}{36}$
or
${x}^{2} = 4$
or
$x = \sqrt{4}$
or
$x = \pm 2$