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Simplifying 20x2 + -87x + 28 = 0 Reorder the terms: 28 + -87x + 20x2 = 0 Solving 28 + -87x + 20x2 = 0 Solving for variable 'x'. Factor a trinomial. (7 + -20x)(4 + -1x) = 0Subproblem 1
Set the factor '(7 + -20x)' equal to zero and attempt to solve: Simplifying 7 + -20x = 0 Solving 7 + -20x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -20x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -20x = 0 + -7 -20x = 0 + -7 Combine like terms: 0 + -7 = -7 -20x = -7 Divide each side by '-20'. x = 0.35 Simplifying x = 0.35Subproblem 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 = {0.35, 4}
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