# How do you solve 3x^2=12?

Mar 24, 2018

Divide to isolate x and find the square root.

#### Explanation:

$3 {x}^{=} 12$ divide both sides by 3

$3 {x}^{2} / 3 = \frac{12}{3}$ this gives

${x}^{2} = 4$ take the square root of both sides

$x = 2 , - 2$

Mar 24, 2018

$x = \pm 2$

#### Explanation:

$3 {x}^{2} = 12$

${x}^{2} = 4 \rightarrow$ Divide each side by 3

$x = \pm 2 \rightarrow$ ${\left(- 2\right)}^{2} = {2}^{2} = 4$

There are two answers: -2 and 2