4y^2+4-8=0

Solution for 4y^2+4-8=0 equation:

Simplifying
4y2 + 4 + -8 = 0

Reorder the terms:
4 + -8 + 4y2 = 0

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

Solving
-4 + 4y2 = 0

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + 4y2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 4y2 = 0 + 4
4y2 = 0 + 4

Combine like terms: 0 + 4 = 4
4y2 = 4

Divide each side by '4'.
y2 = 1

Simplifying
y2 = 1

Take the square root of each side:
y = {-1, 1}