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Simplifying 6(12x + -42)(x + -3) = 0 Reorder the terms: 6(-42 + 12x)(x + -3) = 0 Reorder the terms: 6(-42 + 12x)(-3 + x) = 0 Multiply (-42 + 12x) * (-3 + x) 6(-42(-3 + x) + 12x * (-3 + x)) = 0 6((-3 * -42 + x * -42) + 12x * (-3 + x)) = 0 6((126 + -42x) + 12x * (-3 + x)) = 0 6(126 + -42x + (-3 * 12x + x * 12x)) = 0 6(126 + -42x + (-36x + 12x2)) = 0 Combine like terms: -42x + -36x = -78x 6(126 + -78x + 12x2) = 0 (126 * 6 + -78x * 6 + 12x2 * 6) = 0 (756 + -468x + 72x2) = 0 Solving 756 + -468x + 72x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '36'. 36(21 + -13x + 2x2) = 0 Factor a trinomial. 36((3 + -1x)(7 + -2x)) = 0 Ignore the factor 36.Subproblem 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 '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5Solution
x = {3, 3.5}
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