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Simplifying 5x2 + -30x = -40 Reorder the terms: -30x + 5x2 = -40 Solving -30x + 5x2 = -40 Solving for variable 'x'. Reorder the terms: 40 + -30x + 5x2 = -40 + 40 Combine like terms: -40 + 40 = 0 40 + -30x + 5x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(8 + -6x + x2) = 0 Factor a trinomial. 5((2 + -1x)(4 + -1x)) = 0 Ignore the factor 5.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 '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Solution
x = {2, 4}
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