4y^2-64=

Solution for 4y^2-64= equation:

Simplifying
4y2 + -64 = 0

Reorder the terms:
-64 + 4y2 = 0

Solving
-64 + 4y2 = 0

Solving for variable 'y'.

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

Add '64' to each side of the equation.
-64 + 64 + 4y2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 4y2 = 0 + 64
4y2 = 0 + 64

Combine like terms: 0 + 64 = 64
4y2 = 64

Divide each side by '4'.
y2 = 16

Simplifying
y2 = 16

Take the square root of each side:
y = {-4, 4}