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Simplifying x + -1(x + 5) = 2x(2x + 6) Reorder the terms: x + -1(5 + x) = 2x(2x + 6) x + (5 * -1 + x * -1) = 2x(2x + 6) x + (-5 + -1x) = 2x(2x + 6) Reorder the terms: -5 + x + -1x = 2x(2x + 6) Combine like terms: x + -1x = 0 -5 + 0 = 2x(2x + 6) -5 = 2x(2x + 6) Reorder the terms: -5 = 2x(6 + 2x) -5 = (6 * 2x + 2x * 2x) -5 = (12x + 4x2) Solving -5 = 12x + 4x2 Solving for variable 'x'. Reorder the terms: -5 + -12x + -4x2 = 12x + -12x + 4x2 + -4x2 Combine like terms: 12x + -12x = 0 -5 + -12x + -4x2 = 0 + 4x2 + -4x2 -5 + -12x + -4x2 = 4x2 + -4x2 Combine like terms: 4x2 + -4x2 = 0 -5 + -12x + -4x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(5 + 12x + 4x2) = 0 Factor a trinomial. -1((5 + 2x)(1 + 2x)) = 0 Ignore the factor -1.Subproblem 1
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 = -2.5Subproblem 2
Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5Solution
x = {-2.5, -0.5}
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