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Simplifying x2 + -6x = -10x + 126 + -1x2 Reorder the terms: -6x + x2 = -10x + 126 + -1x2 Reorder the terms: -6x + x2 = 126 + -10x + -1x2 Solving -6x + x2 = 126 + -10x + -1x2 Solving for variable 'x'. Reorder the terms: -126 + -6x + 10x + x2 + x2 = 126 + -10x + -1x2 + -126 + 10x + x2 Combine like terms: -6x + 10x = 4x -126 + 4x + x2 + x2 = 126 + -10x + -1x2 + -126 + 10x + x2 Combine like terms: x2 + x2 = 2x2 -126 + 4x + 2x2 = 126 + -10x + -1x2 + -126 + 10x + x2 Reorder the terms: -126 + 4x + 2x2 = 126 + -126 + -10x + 10x + -1x2 + x2 Combine like terms: 126 + -126 = 0 -126 + 4x + 2x2 = 0 + -10x + 10x + -1x2 + x2 -126 + 4x + 2x2 = -10x + 10x + -1x2 + x2 Combine like terms: -10x + 10x = 0 -126 + 4x + 2x2 = 0 + -1x2 + x2 -126 + 4x + 2x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 -126 + 4x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-63 + 2x + x2) = 0 Factor a trinomial. 2((-9 + -1x)(7 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9Subproblem 2
Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7Solution
x = {-9, 7}
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