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Simplifying 3x2 = (2x)(2x + 10) Remove parenthesis around (2x) 3x2 = 2x(2x + 10) Reorder the terms: 3x2 = 2x(10 + 2x) 3x2 = (10 * 2x + 2x * 2x) 3x2 = (20x + 4x2) Solving 3x2 = 20x + 4x2 Solving for variable 'x'. Reorder the terms: -20x + 3x2 + -4x2 = 20x + 4x2 + -20x + -4x2 Combine like terms: 3x2 + -4x2 = -1x2 -20x + -1x2 = 20x + 4x2 + -20x + -4x2 Reorder the terms: -20x + -1x2 = 20x + -20x + 4x2 + -4x2 Combine like terms: 20x + -20x = 0 -20x + -1x2 = 0 + 4x2 + -4x2 -20x + -1x2 = 4x2 + -4x2 Combine like terms: 4x2 + -4x2 = 0 -20x + -1x2 = 0 Factor out the Greatest Common Factor (GCF), '-1x'. -1x(20 + x) = 0 Ignore the factor -1.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 '(20 + x)' equal to zero and attempt to solve: Simplifying 20 + x = 0 Solving 20 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + x = 0 + -20 x = 0 + -20 Combine like terms: 0 + -20 = -20 x = -20 Simplifying x = -20Solution
x = {0, -20}
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