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Simplifying -1(12x2 + 5x + -7) = 4 Reorder the terms: -1(-7 + 5x + 12x2) = 4 (-7 * -1 + 5x * -1 + 12x2 * -1) = 4 (7 + -5x + -12x2) = 4 Solving 7 + -5x + -12x2 = 4 Solving for variable 'x'. Reorder the terms: 7 + -4 + -5x + -12x2 = 4 + -4 Combine like terms: 7 + -4 = 3 3 + -5x + -12x2 = 4 + -4 Combine like terms: 4 + -4 = 0 3 + -5x + -12x2 = 0 Factor a trinomial. (1 + -3x)(3 + 4x) = 0Subproblem 1
Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333Subproblem 2
Set the factor '(3 + 4x)' equal to zero and attempt to solve: Simplifying 3 + 4x = 0 Solving 3 + 4x = 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 + 4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 4x = 0 + -3 4x = 0 + -3 Combine like terms: 0 + -3 = -3 4x = -3 Divide each side by '4'. x = -0.75 Simplifying x = -0.75Solution
x = {0.3333333333, -0.75}
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