3(12-3y^2)=

Solution for 3(12-3y^2)= equation:

Simplifying
3(12 + -3y2) = 0
(12 * 3 + -3y2 * 3) = 0
(36 + -9y2) = 0

Solving
36 + -9y2 = 0

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-36' to each side of the equation.
36 + -36 + -9y2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -9y2 = 0 + -36
-9y2 = 0 + -36

Combine like terms: 0 + -36 = -36
-9y2 = -36

Divide each side by '-9'.
y2 = 4

Simplifying
y2 = 4

Take the square root of each side:
y = {-2, 2}