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Simplifying 3x(x + 12) + -5(x + 12) = 0 Reorder the terms: 3x(12 + x) + -5(x + 12) = 0 (12 * 3x + x * 3x) + -5(x + 12) = 0 (36x + 3x2) + -5(x + 12) = 0 Reorder the terms: 36x + 3x2 + -5(12 + x) = 0 36x + 3x2 + (12 * -5 + x * -5) = 0 36x + 3x2 + (-60 + -5x) = 0 Reorder the terms: -60 + 36x + -5x + 3x2 = 0 Combine like terms: 36x + -5x = 31x -60 + 31x + 3x2 = 0 Solving -60 + 31x + 3x2 = 0 Solving for variable 'x'. Factor a trinomial. (-12 + -1x)(5 + -3x) = 0Subproblem 1
Set the factor '(-12 + -1x)' equal to zero and attempt to solve: Simplifying -12 + -1x = 0 Solving -12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1x = 0 + 12 -1x = 0 + 12 Combine like terms: 0 + 12 = 12 -1x = 12 Divide each side by '-1'. x = -12 Simplifying x = -12Subproblem 2
Set the factor '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667Solution
x = {-12, 1.666666667}
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