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Simplifying 5x2 = -90 + 45x Solving 5x2 = -90 + 45x Solving for variable 'x'. Reorder the terms: 90 + -45x + 5x2 = -90 + 45x + 90 + -45x Reorder the terms: 90 + -45x + 5x2 = -90 + 90 + 45x + -45x Combine like terms: -90 + 90 = 0 90 + -45x + 5x2 = 0 + 45x + -45x 90 + -45x + 5x2 = 45x + -45x Combine like terms: 45x + -45x = 0 90 + -45x + 5x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(18 + -9x + x2) = 0 Factor a trinomial. 5((3 + -1x)(6 + -1x)) = 0 Ignore the factor 5.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 '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6Solution
x = {3, 6}
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