# How do you solve sqrt(y +12) = 2?

Sep 19, 2015

$y = - 8$

#### Explanation:

$\sqrt{y + 12} = 2$

Solve it step-wise by isolating $y$. First square both sides:
$y + 12 = {2}^{2} = 4$

Then subtract $12$ from both sides:
$y + 12 - 12 = 4 - 12$

Now we have the solution:
$y = - 8$