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