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Simplifying 270 = x(2x + 12) Reorder the terms: 270 = x(12 + 2x) 270 = (12 * x + 2x * x) 270 = (12x + 2x2) Solving 270 = 12x + 2x2 Solving for variable 'x'. Reorder the terms: 270 + -12x + -2x2 = 12x + -12x + 2x2 + -2x2 Combine like terms: 12x + -12x = 0 270 + -12x + -2x2 = 0 + 2x2 + -2x2 270 + -12x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 270 + -12x + -2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(135 + -6x + -1x2) = 0 Factor a trinomial. 2((9 + -1x)(15 + x)) = 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 '(15 + x)' equal to zero and attempt to solve: Simplifying 15 + x = 0 Solving 15 + x = 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 + x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + x = 0 + -15 x = 0 + -15 Combine like terms: 0 + -15 = -15 x = -15 Simplifying x = -15Solution
x = {9, -15}
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