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Simplifying 2(x + 9) = 2x2 + 18 Reorder the terms: 2(9 + x) = 2x2 + 18 (9 * 2 + x * 2) = 2x2 + 18 (18 + 2x) = 2x2 + 18 Reorder the terms: 18 + 2x = 18 + 2x2 Add '-18' to each side of the equation. 18 + -18 + 2x = 18 + -18 + 2x2 Combine like terms: 18 + -18 = 0 0 + 2x = 18 + -18 + 2x2 2x = 18 + -18 + 2x2 Combine like terms: 18 + -18 = 0 2x = 0 + 2x2 2x = 2x2 Solving 2x = 2x2 Solving for variable 'x'. Combine like terms: 2x2 + -2x2 = 0 2x + -2x2 = 0 Factor out the Greatest Common Factor (GCF), '2x'. 2x(1 + -1x) = 0 Ignore the factor 2.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 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 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 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {0, 1}
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