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Simplifying x2 + 8x + -30 = 3x(x + -8) Reorder the terms: -30 + 8x + x2 = 3x(x + -8) Reorder the terms: -30 + 8x + x2 = 3x(-8 + x) -30 + 8x + x2 = (-8 * 3x + x * 3x) -30 + 8x + x2 = (-24x + 3x2) Solving -30 + 8x + x2 = -24x + 3x2 Solving for variable 'x'. Reorder the terms: -30 + 8x + 24x + x2 + -3x2 = -24x + 3x2 + 24x + -3x2 Combine like terms: 8x + 24x = 32x -30 + 32x + x2 + -3x2 = -24x + 3x2 + 24x + -3x2 Combine like terms: x2 + -3x2 = -2x2 -30 + 32x + -2x2 = -24x + 3x2 + 24x + -3x2 Reorder the terms: -30 + 32x + -2x2 = -24x + 24x + 3x2 + -3x2 Combine like terms: -24x + 24x = 0 -30 + 32x + -2x2 = 0 + 3x2 + -3x2 -30 + 32x + -2x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 -30 + 32x + -2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-15 + 16x + -1x2) = 0 Factor a trinomial. 2((-15 + x)(1 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-15 + x)' equal to zero and attempt to solve: Simplifying -15 + x = 0 Solving -15 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + x = 0 + 15 x = 0 + 15 Combine like terms: 0 + 15 = 15 x = 15 Simplifying x = 15Subproblem 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 = {15, 1}
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