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Simplifying -40 = -27x + -7x2 Solving -40 = -27x + -7x2 Solving for variable 'x'. Reorder the terms: -40 + 27x + 7x2 = -27x + 27x + -7x2 + 7x2 Combine like terms: -27x + 27x = 0 -40 + 27x + 7x2 = 0 + -7x2 + 7x2 -40 + 27x + 7x2 = -7x2 + 7x2 Combine like terms: -7x2 + 7x2 = 0 -40 + 27x + 7x2 = 0 Factor a trinomial. (-5 + -1x)(8 + -7x) = 0Subproblem 1
Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 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 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5Subproblem 2
Set the factor '(8 + -7x)' equal to zero and attempt to solve: Simplifying 8 + -7x = 0 Solving 8 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -7x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -7x = 0 + -8 -7x = 0 + -8 Combine like terms: 0 + -8 = -8 -7x = -8 Divide each side by '-7'. x = 1.142857143 Simplifying x = 1.142857143Solution
x = {-5, 1.142857143}
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