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Simplifying (4x + 12)(x + -1) = 0 Reorder the terms: (12 + 4x)(x + -1) = 0 Reorder the terms: (12 + 4x)(-1 + x) = 0 Multiply (12 + 4x) * (-1 + x) (12(-1 + x) + 4x * (-1 + x)) = 0 ((-1 * 12 + x * 12) + 4x * (-1 + x)) = 0 ((-12 + 12x) + 4x * (-1 + x)) = 0 (-12 + 12x + (-1 * 4x + x * 4x)) = 0 (-12 + 12x + (-4x + 4x2)) = 0 Combine like terms: 12x + -4x = 8x (-12 + 8x + 4x2) = 0 Solving -12 + 8x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(-3 + 2x + x2) = 0 Factor a trinomial. 4((-3 + -1x)(1 + -1x)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 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 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {-3, 1}
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