(3s+6)(3s-6)=

Solution for (3s+6)(3s-6)= equation:

Simplifying
(3s + 6)(3s + -6) = 0

Reorder the terms:
(6 + 3s)(3s + -6) = 0

Reorder the terms:
(6 + 3s)(-6 + 3s) = 0

Multiply (6 + 3s) * (-6 + 3s)
(6(-6 + 3s) + 3s * (-6 + 3s)) = 0
((-6 * 6 + 3s * 6) + 3s * (-6 + 3s)) = 0
((-36 + 18s) + 3s * (-6 + 3s)) = 0
(-36 + 18s + (-6 * 3s + 3s * 3s)) = 0
(-36 + 18s + (-18s + 9s2)) = 0

Combine like terms: 18s + -18s = 0
(-36 + 0 + 9s2) = 0
(-36 + 9s2) = 0

Solving
-36 + 9s2 = 0

Solving for variable 's'.

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

Add '36' to each side of the equation.
-36 + 36 + 9s2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 9s2 = 0 + 36
9s2 = 0 + 36

Combine like terms: 0 + 36 = 36
9s2 = 36

Divide each side by '9'.
s2 = 4

Simplifying
s2 = 4

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