How do you solve 4x² - 36 = 0?

Jun 30, 2015

$x = 3$

Explanation:

Start my moving $- 36$ to the other side, so it would look like this:

$4 {x}^{2} = 36$

Then, divide all sides by 4:

${x}^{2} = 9$

And finally, the root of 9 is...:

$x = 3$

There you have it:)