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Simplifying (x + -7)(x + 8) = -1(x + 8) Reorder the terms: (-7 + x)(x + 8) = -1(x + 8) Reorder the terms: (-7 + x)(8 + x) = -1(x + 8) Multiply (-7 + x) * (8 + x) (-7(8 + x) + x(8 + x)) = -1(x + 8) ((8 * -7 + x * -7) + x(8 + x)) = -1(x + 8) ((-56 + -7x) + x(8 + x)) = -1(x + 8) (-56 + -7x + (8 * x + x * x)) = -1(x + 8) (-56 + -7x + (8x + x2)) = -1(x + 8) Combine like terms: -7x + 8x = 1x (-56 + 1x + x2) = -1(x + 8) Reorder the terms: -56 + 1x + x2 = -1(8 + x) -56 + 1x + x2 = (8 * -1 + x * -1) -56 + 1x + x2 = (-8 + -1x) Solving -56 + 1x + x2 = -8 + -1x Solving for variable 'x'. Reorder the terms: -56 + 8 + 1x + x + x2 = -8 + -1x + 8 + x Combine like terms: -56 + 8 = -48 -48 + 1x + x + x2 = -8 + -1x + 8 + x Combine like terms: 1x + x = 2x -48 + 2x + x2 = -8 + -1x + 8 + x Reorder the terms: -48 + 2x + x2 = -8 + 8 + -1x + x Combine like terms: -8 + 8 = 0 -48 + 2x + x2 = 0 + -1x + x -48 + 2x + x2 = -1x + x Combine like terms: -1x + x = 0 -48 + 2x + x2 = 0 Factor a trinomial. (-8 + -1x)(6 + -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 '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6Solution
x = {-8, 6}
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