(a+8)(a-8)=

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

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

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

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

Multiply (8 + a) * (-8 + a)
(8(-8 + a) + a(-8 + a)) = 0
((-8 * 8 + a * 8) + a(-8 + a)) = 0
((-64 + 8a) + a(-8 + a)) = 0
(-64 + 8a + (-8 * a + a * a)) = 0
(-64 + 8a + (-8a + a2)) = 0

Combine like terms: 8a + -8a = 0
(-64 + 0 + a2) = 0
(-64 + a2) = 0

Solving
-64 + a2 = 0

Solving for variable 'a'.

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

Add '64' to each side of the equation.
-64 + 64 + a2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + a2 = 0 + 64
a2 = 0 + 64

Combine like terms: 0 + 64 = 64
a2 = 64

Simplifying
a2 = 64

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