3(x+2)(x-2)=0

Solution for 3(x+2)(x-2)=0 equation:

Simplifying
3(x + 2)(x + -2) = 0

Reorder the terms:
3(2 + x)(x + -2) = 0

Reorder the terms:
3(2 + x)(-2 + x) = 0

Multiply (2 + x) * (-2 + x)
3(2(-2 + x) + x(-2 + x)) = 0
3((-2 * 2 + x * 2) + x(-2 + x)) = 0
3((-4 + 2x) + x(-2 + x)) = 0
3(-4 + 2x + (-2 * x + x * x)) = 0
3(-4 + 2x + (-2x + x2)) = 0

Combine like terms: 2x + -2x = 0
3(-4 + 0 + x2) = 0
3(-4 + x2) = 0
(-4 * 3 + x2 * 3) = 0
(-12 + 3x2) = 0

Solving
-12 + 3x2 = 0

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 3x2 = 0 + 12
3x2 = 0 + 12

Combine like terms: 0 + 12 = 12
3x2 = 12

Divide each side by '3'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}