2y^2+4-12=0

Solution for 2y^2+4-12=0 equation:

Simplifying
2y2 + 4 + -12 = 0

Reorder the terms:
4 + -12 + 2y2 = 0

Combine like terms: 4 + -12 = -8
-8 + 2y2 = 0

Solving
-8 + 2y2 = 0

Solving for variable 'y'.

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

Add '8' to each side of the equation.
-8 + 8 + 2y2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 2y2 = 0 + 8
2y2 = 0 + 8

Combine like terms: 0 + 8 = 8
2y2 = 8

Divide each side by '2'.
y2 = 4

Simplifying
y2 = 4

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