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Simplifying 2x2 = 18x + -28 Reorder the terms: 2x2 = -28 + 18x Solving 2x2 = -28 + 18x Solving for variable 'x'. Reorder the terms: 28 + -18x + 2x2 = -28 + 18x + 28 + -18x Reorder the terms: 28 + -18x + 2x2 = -28 + 28 + 18x + -18x Combine like terms: -28 + 28 = 0 28 + -18x + 2x2 = 0 + 18x + -18x 28 + -18x + 2x2 = 18x + -18x Combine like terms: 18x + -18x = 0 28 + -18x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(14 + -9x + x2) = 0 Factor a trinomial. 2((2 + -1x)(7 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Subproblem 2
Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7Solution
x = {2, 7}
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