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Simplifying (x + -4)(x + 5) = -20 Reorder the terms: (-4 + x)(x + 5) = -20 Reorder the terms: (-4 + x)(5 + x) = -20 Multiply (-4 + x) * (5 + x) (-4(5 + x) + x(5 + x)) = -20 ((5 * -4 + x * -4) + x(5 + x)) = -20 ((-20 + -4x) + x(5 + x)) = -20 (-20 + -4x + (5 * x + x * x)) = -20 (-20 + -4x + (5x + x2)) = -20 Combine like terms: -4x + 5x = 1x (-20 + 1x + x2) = -20 Add '20' to each side of the equation. -20 + 1x + 20 + x2 = -20 + 20 Reorder the terms: -20 + 20 + 1x + x2 = -20 + 20 Combine like terms: -20 + 20 = 0 0 + 1x + x2 = -20 + 20 1x + x2 = -20 + 20 Combine like terms: -20 + 20 = 0 1x + x2 = 0 Solving 1x + x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x'. x(1 + x) = 0Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {0, -1}
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