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Simplifying (x + -4)(x + 5) = -3(x + -4) Reorder the terms: (-4 + x)(x + 5) = -3(x + -4) Reorder the terms: (-4 + x)(5 + x) = -3(x + -4) Multiply (-4 + x) * (5 + x) (-4(5 + x) + x(5 + x)) = -3(x + -4) ((5 * -4 + x * -4) + x(5 + x)) = -3(x + -4) ((-20 + -4x) + x(5 + x)) = -3(x + -4) (-20 + -4x + (5 * x + x * x)) = -3(x + -4) (-20 + -4x + (5x + x2)) = -3(x + -4) Combine like terms: -4x + 5x = 1x (-20 + 1x + x2) = -3(x + -4) Reorder the terms: -20 + 1x + x2 = -3(-4 + x) -20 + 1x + x2 = (-4 * -3 + x * -3) -20 + 1x + x2 = (12 + -3x) Solving -20 + 1x + x2 = 12 + -3x Solving for variable 'x'. Reorder the terms: -20 + -12 + 1x + 3x + x2 = 12 + -3x + -12 + 3x Combine like terms: -20 + -12 = -32 -32 + 1x + 3x + x2 = 12 + -3x + -12 + 3x Combine like terms: 1x + 3x = 4x -32 + 4x + x2 = 12 + -3x + -12 + 3x Reorder the terms: -32 + 4x + x2 = 12 + -12 + -3x + 3x Combine like terms: 12 + -12 = 0 -32 + 4x + x2 = 0 + -3x + 3x -32 + 4x + x2 = -3x + 3x Combine like terms: -3x + 3x = 0 -32 + 4x + x2 = 0 Factor a trinomial. (-8 + -1x)(4 + -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 '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Solution
x = {-8, 4}
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