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Simplifying 4x(2x + -5) = 6x + -15 Reorder the terms: 4x(-5 + 2x) = 6x + -15 (-5 * 4x + 2x * 4x) = 6x + -15 (-20x + 8x2) = 6x + -15 Reorder the terms: -20x + 8x2 = -15 + 6x Solving -20x + 8x2 = -15 + 6x Solving for variable 'x'. Reorder the terms: 15 + -20x + -6x + 8x2 = -15 + 6x + 15 + -6x Combine like terms: -20x + -6x = -26x 15 + -26x + 8x2 = -15 + 6x + 15 + -6x Reorder the terms: 15 + -26x + 8x2 = -15 + 15 + 6x + -6x Combine like terms: -15 + 15 = 0 15 + -26x + 8x2 = 0 + 6x + -6x 15 + -26x + 8x2 = 6x + -6x Combine like terms: 6x + -6x = 0 15 + -26x + 8x2 = 0 Factor a trinomial. (3 + -4x)(5 + -2x) = 0Subproblem 1
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 = 0.75Subproblem 2
Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5Solution
x = {0.75, 2.5}
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