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Simplifying x(2x + 3) = -4x(x + -1) + 15 Reorder the terms: x(3 + 2x) = -4x(x + -1) + 15 (3 * x + 2x * x) = -4x(x + -1) + 15 (3x + 2x2) = -4x(x + -1) + 15 Reorder the terms: 3x + 2x2 = -4x(-1 + x) + 15 3x + 2x2 = (-1 * -4x + x * -4x) + 15 3x + 2x2 = (4x + -4x2) + 15 Reorder the terms: 3x + 2x2 = 15 + 4x + -4x2 Solving 3x + 2x2 = 15 + 4x + -4x2 Solving for variable 'x'. Reorder the terms: -15 + 3x + -4x + 2x2 + 4x2 = 15 + 4x + -4x2 + -15 + -4x + 4x2 Combine like terms: 3x + -4x = -1x -15 + -1x + 2x2 + 4x2 = 15 + 4x + -4x2 + -15 + -4x + 4x2 Combine like terms: 2x2 + 4x2 = 6x2 -15 + -1x + 6x2 = 15 + 4x + -4x2 + -15 + -4x + 4x2 Reorder the terms: -15 + -1x + 6x2 = 15 + -15 + 4x + -4x + -4x2 + 4x2 Combine like terms: 15 + -15 = 0 -15 + -1x + 6x2 = 0 + 4x + -4x + -4x2 + 4x2 -15 + -1x + 6x2 = 4x + -4x + -4x2 + 4x2 Combine like terms: 4x + -4x = 0 -15 + -1x + 6x2 = 0 + -4x2 + 4x2 -15 + -1x + 6x2 = -4x2 + 4x2 Combine like terms: -4x2 + 4x2 = 0 -15 + -1x + 6x2 = 0 Factor a trinomial. (-3 + -2x)(5 + -3x) = 0Subproblem 1
Set the factor '(-3 + -2x)' equal to zero and attempt to solve: Simplifying -3 + -2x = 0 Solving -3 + -2x = 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 + -2x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -2x = 0 + 3 -2x = 0 + 3 Combine like terms: 0 + 3 = 3 -2x = 3 Divide each side by '-2'. x = -1.5 Simplifying x = -1.5Subproblem 2
Set the factor '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 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 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667Solution
x = {-1.5, 1.666666667}
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