(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}