(z-8)(z+8)=

Solution for (z-8)(z+8)= equation:

Simplifying
(z + -8)(z + 8) = 0

Reorder the terms:
(-8 + z)(z + 8) = 0

Reorder the terms:
(-8 + z)(8 + z) = 0

Multiply (-8 + z) * (8 + z)
(-8(8 + z) + z(8 + z)) = 0
((8 * -8 + z * -8) + z(8 + z)) = 0
((-64 + -8z) + z(8 + z)) = 0
(-64 + -8z + (8 * z + z * z)) = 0
(-64 + -8z + (8z + z2)) = 0

Combine like terms: -8z + 8z = 0
(-64 + 0 + z2) = 0
(-64 + z2) = 0

Solving
-64 + z2 = 0

Solving for variable 'z'.

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

Add '64' to each side of the equation.
-64 + 64 + z2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + z2 = 0 + 64
z2 = 0 + 64

Combine like terms: 0 + 64 = 64
z2 = 64

Simplifying
z2 = 64

Take the square root of each side:
z = {-8, 8}