(3b+3)(3b-3)=

Solution for (3b+3)(3b-3)= equation:

Simplifying
(3b + 3)(3b + -3) = 0

Reorder the terms:
(3 + 3b)(3b + -3) = 0

Reorder the terms:
(3 + 3b)(-3 + 3b) = 0

Multiply (3 + 3b) * (-3 + 3b)
(3(-3 + 3b) + 3b * (-3 + 3b)) = 0
((-3 * 3 + 3b * 3) + 3b * (-3 + 3b)) = 0
((-9 + 9b) + 3b * (-3 + 3b)) = 0
(-9 + 9b + (-3 * 3b + 3b * 3b)) = 0
(-9 + 9b + (-9b + 9b2)) = 0

Combine like terms: 9b + -9b = 0
(-9 + 0 + 9b2) = 0
(-9 + 9b2) = 0

Solving
-9 + 9b2 = 0

Solving for variable 'b'.

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

Add '9' to each side of the equation.
-9 + 9 + 9b2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 9b2 = 0 + 9
9b2 = 0 + 9

Combine like terms: 0 + 9 = 9
9b2 = 9

Divide each side by '9'.
b2 = 1

Simplifying
b2 = 1

Take the square root of each side:
b = {-1, 1}