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Simplifying (x + -30)(x + -120) = 0 Reorder the terms: (-30 + x)(x + -120) = 0 Reorder the terms: (-30 + x)(-120 + x) = 0 Multiply (-30 + x) * (-120 + x) (-30(-120 + x) + x(-120 + x)) = 0 ((-120 * -30 + x * -30) + x(-120 + x)) = 0 ((3600 + -30x) + x(-120 + x)) = 0 (3600 + -30x + (-120 * x + x * x)) = 0 (3600 + -30x + (-120x + x2)) = 0 Combine like terms: -30x + -120x = -150x (3600 + -150x + x2) = 0 Solving 3600 + -150x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (30 + -1x)(120 + -1x) = 0Subproblem 1
Set the factor '(30 + -1x)' equal to zero and attempt to solve: Simplifying 30 + -1x = 0 Solving 30 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -1x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + -1x = 0 + -30 -1x = 0 + -30 Combine like terms: 0 + -30 = -30 -1x = -30 Divide each side by '-1'. x = 30 Simplifying x = 30Subproblem 2
Set the factor '(120 + -1x)' equal to zero and attempt to solve: Simplifying 120 + -1x = 0 Solving 120 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-120' to each side of the equation. 120 + -120 + -1x = 0 + -120 Combine like terms: 120 + -120 = 0 0 + -1x = 0 + -120 -1x = 0 + -120 Combine like terms: 0 + -120 = -120 -1x = -120 Divide each side by '-1'. x = 120 Simplifying x = 120Solution
x = {30, 120}
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