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Simplifying 8x2 = 112 + -40x Solving 8x2 = 112 + -40x Solving for variable 'x'. Reorder the terms: -112 + 40x + 8x2 = 112 + -40x + -112 + 40x Reorder the terms: -112 + 40x + 8x2 = 112 + -112 + -40x + 40x Combine like terms: 112 + -112 = 0 -112 + 40x + 8x2 = 0 + -40x + 40x -112 + 40x + 8x2 = -40x + 40x Combine like terms: -40x + 40x = 0 -112 + 40x + 8x2 = 0 Factor out the Greatest Common Factor (GCF), '8'. 8(-14 + 5x + x2) = 0 Factor a trinomial. 8((-7 + -1x)(2 + -1x)) = 0 Ignore the factor 8.Subproblem 1
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 = -7Subproblem 2
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Solution
x = {-7, 2}
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