Simplifying b4 = 9 Solving b4 = 9 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Simplifying b4 = 9 Reorder the terms: -9 + b4 = 9 + -9 Combine like terms: 9 + -9 = 0 -9 + b4 = 0 Factor a difference between two squares. (3 + b2)(-3 + b2) = 0