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Simplifying 2x2 + 42x + 441 = 225 Reorder the terms: 441 + 42x + 2x2 = 225 Solving 441 + 42x + 2x2 = 225 Solving for variable 'x'. Reorder the terms: 441 + -225 + 42x + 2x2 = 225 + -225 Combine like terms: 441 + -225 = 216 216 + 42x + 2x2 = 225 + -225 Combine like terms: 225 + -225 = 0 216 + 42x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(108 + 21x + x2) = 0 Factor a trinomial. 2((12 + x)(9 + x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(12 + x)' equal to zero and attempt to solve: Simplifying 12 + x = 0 Solving 12 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + x = 0 + -12 x = 0 + -12 Combine like terms: 0 + -12 = -12 x = -12 Simplifying x = -12Subproblem 2
Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9Solution
x = {-12, -9}
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