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Simplifying 0 = 3x2 + -5x + -12 Reorder the terms: 0 = -12 + -5x + 3x2 Solving 0 = -12 + -5x + 3x2 Solving for variable 'x'. Combine like terms: 0 + 12 = 12 12 + 5x + -3x2 = -12 + -5x + 3x2 + 12 + 5x + -3x2 Reorder the terms: 12 + 5x + -3x2 = -12 + 12 + -5x + 5x + 3x2 + -3x2 Combine like terms: -12 + 12 = 0 12 + 5x + -3x2 = 0 + -5x + 5x + 3x2 + -3x2 12 + 5x + -3x2 = -5x + 5x + 3x2 + -3x2 Combine like terms: -5x + 5x = 0 12 + 5x + -3x2 = 0 + 3x2 + -3x2 12 + 5x + -3x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 12 + 5x + -3x2 = 0 Factor a trinomial. (3 + -1x)(4 + 3x) = 0Subproblem 1
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Subproblem 2
Set the factor '(4 + 3x)' equal to zero and attempt to solve: Simplifying 4 + 3x = 0 Solving 4 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3x = 0 + -4 3x = 0 + -4 Combine like terms: 0 + -4 = -4 3x = -4 Divide each side by '3'. x = -1.333333333 Simplifying x = -1.333333333Solution
x = {3, -1.333333333}
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