(k+8)(k-8)=0

Solution for (k+8)(k-8)=0 equation:

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

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

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

Multiply (8 + k) * (-8 + k)
(8(-8 + k) + k(-8 + k)) = 0
((-8 * 8 + k * 8) + k(-8 + k)) = 0
((-64 + 8k) + k(-8 + k)) = 0
(-64 + 8k + (-8 * k + k * k)) = 0
(-64 + 8k + (-8k + k2)) = 0

Combine like terms: 8k + -8k = 0
(-64 + 0 + k2) = 0
(-64 + k2) = 0

Solving
-64 + k2 = 0

Solving for variable 'k'.

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

Add '64' to each side of the equation.
-64 + 64 + k2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + k2 = 0 + 64
k2 = 0 + 64

Combine like terms: 0 + 64 = 64
k2 = 64

Simplifying
k2 = 64

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