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Simplifying b2 + 12b + 25 = -7 Reorder the terms: 25 + 12b + b2 = -7 Solving 25 + 12b + b2 = -7 Solving for variable 'b'. Reorder the terms: 25 + 7 + 12b + b2 = -7 + 7 Combine like terms: 25 + 7 = 32 32 + 12b + b2 = -7 + 7 Combine like terms: -7 + 7 = 0 32 + 12b + b2 = 0 Factor a trinomial. (8 + b)(4 + b) = 0Subproblem 1
Set the factor '(8 + b)' equal to zero and attempt to solve: Simplifying 8 + b = 0 Solving 8 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + b = 0 + -8 Combine like terms: 8 + -8 = 0 0 + b = 0 + -8 b = 0 + -8 Combine like terms: 0 + -8 = -8 b = -8 Simplifying b = -8Subproblem 2
Set the factor '(4 + b)' equal to zero and attempt to solve: Simplifying 4 + b = 0 Solving 4 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + b = 0 + -4 b = 0 + -4 Combine like terms: 0 + -4 = -4 b = -4 Simplifying b = -4Solution
b = {-8, -4}
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