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Simplifying 140 = 2x(3x + -1) Reorder the terms: 140 = 2x(-1 + 3x) 140 = (-1 * 2x + 3x * 2x) 140 = (-2x + 6x2) Solving 140 = -2x + 6x2 Solving for variable 'x'. Reorder the terms: 140 + 2x + -6x2 = -2x + 2x + 6x2 + -6x2 Combine like terms: -2x + 2x = 0 140 + 2x + -6x2 = 0 + 6x2 + -6x2 140 + 2x + -6x2 = 6x2 + -6x2 Combine like terms: 6x2 + -6x2 = 0 140 + 2x + -6x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(70 + x + -3x2) = 0 Factor a trinomial. 2((5 + -1x)(14 + 3x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5Subproblem 2
Set the factor '(14 + 3x)' equal to zero and attempt to solve: Simplifying 14 + 3x = 0 Solving 14 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + 3x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + 3x = 0 + -14 3x = 0 + -14 Combine like terms: 0 + -14 = -14 3x = -14 Divide each side by '3'. x = -4.666666667 Simplifying x = -4.666666667Solution
x = {5, -4.666666667}
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