(a-12)(a+12)=

Solution for (a-12)(a+12)= equation:

Simplifying
(a + -12)(a + 12) = 0

Reorder the terms:
(-12 + a)(a + 12) = 0

Reorder the terms:
(-12 + a)(12 + a) = 0

Multiply (-12 + a) * (12 + a)
(-12(12 + a) + a(12 + a)) = 0
((12 * -12 + a * -12) + a(12 + a)) = 0
((-144 + -12a) + a(12 + a)) = 0
(-144 + -12a + (12 * a + a * a)) = 0
(-144 + -12a + (12a + a2)) = 0

Combine like terms: -12a + 12a = 0
(-144 + 0 + a2) = 0
(-144 + a2) = 0

Solving
-144 + a2 = 0

Solving for variable 'a'.

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

Add '144' to each side of the equation.
-144 + 144 + a2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + a2 = 0 + 144
a2 = 0 + 144

Combine like terms: 0 + 144 = 144
a2 = 144

Simplifying
a2 = 144

Take the square root of each side:
a = {-12, 12}