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Simplifying (2x + -1)(x) = 28 Reorder the terms: (-1 + 2x)(x) = 28 Reorder the terms for easier multiplication: x(-1 + 2x) = 28 (-1 * x + 2x * x) = 28 (-1x + 2x2) = 28 Solving -1x + 2x2 = 28 Solving for variable 'x'. Reorder the terms: -28 + -1x + 2x2 = 28 + -28 Combine like terms: 28 + -28 = 0 -28 + -1x + 2x2 = 0 Factor a trinomial. (-7 + -2x)(4 + -1x) = 0Subproblem 1
Set the factor '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 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 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5Subproblem 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 = {-3.5, 4}
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