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Simplifying 5x2 + 15x = -10 Reorder the terms: 15x + 5x2 = -10 Solving 15x + 5x2 = -10 Solving for variable 'x'. Reorder the terms: 10 + 15x + 5x2 = -10 + 10 Combine like terms: -10 + 10 = 0 10 + 15x + 5x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(2 + 3x + x2) = 0 Factor a trinomial. 5((2 + x)(1 + x)) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {-2, -1}
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