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Simplifying 13x2 + 21x = -5x2 + 3x Reorder the terms: 21x + 13x2 = -5x2 + 3x Reorder the terms: 21x + 13x2 = 3x + -5x2 Solving 21x + 13x2 = 3x + -5x2 Solving for variable 'x'. Reorder the terms: 21x + -3x + 13x2 + 5x2 = 3x + -5x2 + -3x + 5x2 Combine like terms: 21x + -3x = 18x 18x + 13x2 + 5x2 = 3x + -5x2 + -3x + 5x2 Combine like terms: 13x2 + 5x2 = 18x2 18x + 18x2 = 3x + -5x2 + -3x + 5x2 Reorder the terms: 18x + 18x2 = 3x + -3x + -5x2 + 5x2 Combine like terms: 3x + -3x = 0 18x + 18x2 = 0 + -5x2 + 5x2 18x + 18x2 = -5x2 + 5x2 Combine like terms: -5x2 + 5x2 = 0 18x + 18x2 = 0 Factor out the Greatest Common Factor (GCF), '18x'. 18x(1 + x) = 0 Ignore the factor 18.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 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 = {0, -1}
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