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Simplifying -5x2 + -20x = -25 Reorder the terms: -20x + -5x2 = -25 Solving -20x + -5x2 = -25 Solving for variable 'x'. Reorder the terms: 25 + -20x + -5x2 = -25 + 25 Combine like terms: -25 + 25 = 0 25 + -20x + -5x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(5 + -4x + -1x2) = 0 Factor a trinomial. 5((1 + -1x)(5 + x)) = 0 Ignore the factor 5.Subproblem 1
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 = 1Subproblem 2
Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5Solution
x = {1, -5}
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