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Simplifying (3x + 3)(x + 3) = 360 Reorder the terms: (3 + 3x)(x + 3) = 360 Reorder the terms: (3 + 3x)(3 + x) = 360 Multiply (3 + 3x) * (3 + x) (3(3 + x) + 3x * (3 + x)) = 360 ((3 * 3 + x * 3) + 3x * (3 + x)) = 360 ((9 + 3x) + 3x * (3 + x)) = 360 (9 + 3x + (3 * 3x + x * 3x)) = 360 (9 + 3x + (9x + 3x2)) = 360 Combine like terms: 3x + 9x = 12x (9 + 12x + 3x2) = 360 Solving 9 + 12x + 3x2 = 360 Solving for variable 'x'. Reorder the terms: 9 + -360 + 12x + 3x2 = 360 + -360 Combine like terms: 9 + -360 = -351 -351 + 12x + 3x2 = 360 + -360 Combine like terms: 360 + -360 = 0 -351 + 12x + 3x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-117 + 4x + x2) = 0 Factor a trinomial. 3((-13 + -1x)(9 + -1x)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-13 + -1x)' equal to zero and attempt to solve: Simplifying -13 + -1x = 0 Solving -13 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -1x = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -1x = 0 + 13 -1x = 0 + 13 Combine like terms: 0 + 13 = 13 -1x = 13 Divide each side by '-1'. x = -13 Simplifying x = -13Subproblem 2
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 = 9Solution
x = {-13, 9}
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