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Simplifying 0 = x2 + 20x Reorder the terms: 0 = 20x + x2 Solving 0 = 20x + x2 Solving for variable 'x'. Remove the zero: -20x + -1x2 = 20x + x2 + -20x + -1x2 Reorder the terms: -20x + -1x2 = 20x + -20x + x2 + -1x2 Combine like terms: 20x + -20x = 0 -20x + -1x2 = 0 + x2 + -1x2 -20x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 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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