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Simplifying 8b2 + 2b + -45 = 0 Reorder the terms: -45 + 2b + 8b2 = 0 Solving -45 + 2b + 8b2 = 0 Solving for variable 'b'. Factor a trinomial. (-5 + -2b)(9 + -4b) = 0Subproblem 1
Set the factor '(-5 + -2b)' equal to zero and attempt to solve: Simplifying -5 + -2b = 0 Solving -5 + -2b = 0 Move all terms containing b to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2b = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2b = 0 + 5 -2b = 0 + 5 Combine like terms: 0 + 5 = 5 -2b = 5 Divide each side by '-2'. b = -2.5 Simplifying b = -2.5Subproblem 2
Set the factor '(9 + -4b)' equal to zero and attempt to solve: Simplifying 9 + -4b = 0 Solving 9 + -4b = 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 + -4b = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4b = 0 + -9 -4b = 0 + -9 Combine like terms: 0 + -9 = -9 -4b = -9 Divide each side by '-4'. b = 2.25 Simplifying b = 2.25Solution
b = {-2.5, 2.25}
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