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Simplifying (500 + -20x)(45 + 5x) = 0 Multiply (500 + -20x) * (45 + 5x) (500(45 + 5x) + -20x * (45 + 5x)) = 0 ((45 * 500 + 5x * 500) + -20x * (45 + 5x)) = 0 ((22500 + 2500x) + -20x * (45 + 5x)) = 0 (22500 + 2500x + (45 * -20x + 5x * -20x)) = 0 (22500 + 2500x + (-900x + -100x2)) = 0 Combine like terms: 2500x + -900x = 1600x (22500 + 1600x + -100x2) = 0 Solving 22500 + 1600x + -100x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '100'. 100(225 + 16x + -1x2) = 0 Factor a trinomial. 100((25 + -1x)(9 + x)) = 0 Ignore the factor 100.Subproblem 1
Set the factor '(25 + -1x)' equal to zero and attempt to solve: Simplifying 25 + -1x = 0 Solving 25 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + -1x = 0 + -25 Combine like terms: 25 + -25 = 0 0 + -1x = 0 + -25 -1x = 0 + -25 Combine like terms: 0 + -25 = -25 -1x = -25 Divide each side by '-1'. x = 25 Simplifying x = 25Subproblem 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 = {25, -9}
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