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Simplifying -15x2 + -16x = 4 Reorder the terms: -16x + -15x2 = 4 Solving -16x + -15x2 = 4 Solving for variable 'x'. Reorder the terms: -4 + -16x + -15x2 = 4 + -4 Combine like terms: 4 + -4 = 0 -4 + -16x + -15x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(4 + 16x + 15x2) = 0 Factor a trinomial. -1((2 + 3x)(2 + 5x)) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(2 + 3x)' equal to zero and attempt to solve: Simplifying 2 + 3x = 0 Solving 2 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 0 + -2 3x = 0 + -2 Combine like terms: 0 + -2 = -2 3x = -2 Divide each side by '3'. x = -0.6666666667 Simplifying x = -0.6666666667Subproblem 2
Set the factor '(2 + 5x)' equal to zero and attempt to solve: Simplifying 2 + 5x = 0 Solving 2 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5x = 0 + -2 5x = 0 + -2 Combine like terms: 0 + -2 = -2 5x = -2 Divide each side by '5'. x = -0.4 Simplifying x = -0.4Solution
x = {-0.6666666667, -0.4}
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