256=z^2

Solution for 256=z^2 equation:

Simplifying
256 = z2

Solving
256 = z2

Solving for variable 'z'.

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

Add '-1z2' to each side of the equation.
256 + -1z2 = z2 + -1z2

Combine like terms: z2 + -1z2 = 0
256 + -1z2 = 0

Add '-256' to each side of the equation.
256 + -256 + -1z2 = 0 + -256

Combine like terms: 256 + -256 = 0
0 + -1z2 = 0 + -256
-1z2 = 0 + -256

Combine like terms: 0 + -256 = -256
-1z2 = -256

Divide each side by '-1'.
z2 = 256

Simplifying
z2 = 256

Take the square root of each side:
z = {-16, 16}