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Simplifying 90x + -5x2 = 85 Solving 90x + -5x2 = 85 Solving for variable 'x'. Reorder the terms: -85 + 90x + -5x2 = 85 + -85 Combine like terms: 85 + -85 = 0 -85 + 90x + -5x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(-17 + 18x + -1x2) = 0 Factor a trinomial. 5((-17 + x)(1 + -1x)) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-17 + x)' equal to zero and attempt to solve: Simplifying -17 + x = 0 Solving -17 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + x = 0 + 17 Combine like terms: -17 + 17 = 0 0 + x = 0 + 17 x = 0 + 17 Combine like terms: 0 + 17 = 17 x = 17 Simplifying x = 17Subproblem 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 = {17, 1}
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