4=4y^2

Solution for 4=4y^2 equation:

Simplifying
4 = 4y2

Solving
4 = 4y2

Solving for variable 'y'.

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

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

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

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}