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Simplifying 4x2 + -84x + 432 = 216 Reorder the terms: 432 + -84x + 4x2 = 216 Solving 432 + -84x + 4x2 = 216 Solving for variable 'x'. Reorder the terms: 432 + -216 + -84x + 4x2 = 216 + -216 Combine like terms: 432 + -216 = 216 216 + -84x + 4x2 = 216 + -216 Combine like terms: 216 + -216 = 0 216 + -84x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(54 + -21x + x2) = 0 Factor a trinomial. 4((3 + -1x)(18 + -1x)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Subproblem 2
Set the factor '(18 + -1x)' equal to zero and attempt to solve: Simplifying 18 + -1x = 0 Solving 18 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1x = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1x = 0 + -18 -1x = 0 + -18 Combine like terms: 0 + -18 = -18 -1x = -18 Divide each side by '-1'. x = 18 Simplifying x = 18Solution
x = {3, 18}
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