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Simplifying 3x2 + -18x = 120 Reorder the terms: -18x + 3x2 = 120 Solving -18x + 3x2 = 120 Solving for variable 'x'. Reorder the terms: -120 + -18x + 3x2 = 120 + -120 Combine like terms: 120 + -120 = 0 -120 + -18x + 3x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-40 + -6x + x2) = 0 Factor a trinomial. 3((-4 + -1x)(10 + -1x)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4Subproblem 2
Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10Solution
x = {-4, 10}
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