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Simplifying x2 + -4x + -5 = 91 Reorder the terms: -5 + -4x + x2 = 91 Solving -5 + -4x + x2 = 91 Solving for variable 'x'. Reorder the terms: -5 + -91 + -4x + x2 = 91 + -91 Combine like terms: -5 + -91 = -96 -96 + -4x + x2 = 91 + -91 Combine like terms: 91 + -91 = 0 -96 + -4x + x2 = 0 Factor a trinomial. (-8 + -1x)(12 + -1x) = 0Subproblem 1
Set the factor '(-8 + -1x)' equal to zero and attempt to solve: Simplifying -8 + -1x = 0 Solving -8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x = 0 + 8 -1x = 0 + 8 Combine like terms: 0 + 8 = 8 -1x = 8 Divide each side by '-1'. x = -8 Simplifying x = -8Subproblem 2
Set the factor '(12 + -1x)' equal to zero and attempt to solve: Simplifying 12 + -1x = 0 Solving 12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12Solution
x = {-8, 12}
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