(b+8)(b-9)=0

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Solution for (b+8)(b-9)=0 equation:


Simplifying
(b + 8)(b + -9) = 0

Reorder the terms:
(8 + b)(b + -9) = 0

Reorder the terms:
(8 + b)(-9 + b) = 0

Multiply (8 + b) * (-9 + b)
(8(-9 + b) + b(-9 + b)) = 0
((-9 * 8 + b * 8) + b(-9 + b)) = 0
((-72 + 8b) + b(-9 + b)) = 0
(-72 + 8b + (-9 * b + b * b)) = 0
(-72 + 8b + (-9b + b2)) = 0

Combine like terms: 8b + -9b = -1b
(-72 + -1b + b2) = 0

Solving
-72 + -1b + b2 = 0

Solving for variable 'b'.

Factor a trinomial.
(-8 + -1b)(9 + -1b) = 0

Subproblem 1

Set the factor '(-8 + -1b)' equal to zero and attempt to solve: Simplifying -8 + -1b = 0 Solving -8 + -1b = 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 + -1b = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1b = 0 + 8 -1b = 0 + 8 Combine like terms: 0 + 8 = 8 -1b = 8 Divide each side by '-1'. b = -8 Simplifying b = -8

Subproblem 2

Set the factor '(9 + -1b)' equal to zero and attempt to solve: Simplifying 9 + -1b = 0 Solving 9 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1b = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1b = 0 + -9 -1b = 0 + -9 Combine like terms: 0 + -9 = -9 -1b = -9 Divide each side by '-1'. b = 9 Simplifying b = 9

Solution

b = {-8, 9}

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