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Simplifying X2 + -120 = 7X Reorder the terms: -120 + X2 = 7X Solving -120 + X2 = 7X Solving for variable 'X'. Reorder the terms: -120 + -7X + X2 = 7X + -7X Combine like terms: 7X + -7X = 0 -120 + -7X + X2 = 0 Factor a trinomial. (-8 + -1X)(15 + -1X) = 0Subproblem 1
Set the factor '(-8 + -1X)' equal to zero and attempt to solve: Simplifying -8 + -1X = 0 Solving -8 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1X = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1X = 0 + 8 -1X = 0 + 8 Combine like terms: 0 + 8 = 8 -1X = 8 Divide each side by '-1'. X = -8 Simplifying X = -8Subproblem 2
Set the factor '(15 + -1X)' equal to zero and attempt to solve: Simplifying 15 + -1X = 0 Solving 15 + -1X = 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 + -1X = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1X = 0 + -15 -1X = 0 + -15 Combine like terms: 0 + -15 = -15 -1X = -15 Divide each side by '-1'. X = 15 Simplifying X = 15Solution
X = {-8, 15}
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