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Simplifying (8x + -7)(5x + 1) = 0 Reorder the terms: (-7 + 8x)(5x + 1) = 0 Reorder the terms: (-7 + 8x)(1 + 5x) = 0 Multiply (-7 + 8x) * (1 + 5x) (-7(1 + 5x) + 8x * (1 + 5x)) = 0 ((1 * -7 + 5x * -7) + 8x * (1 + 5x)) = 0 ((-7 + -35x) + 8x * (1 + 5x)) = 0 (-7 + -35x + (1 * 8x + 5x * 8x)) = 0 (-7 + -35x + (8x + 40x2)) = 0 Combine like terms: -35x + 8x = -27x (-7 + -27x + 40x2) = 0 Solving -7 + -27x + 40x2 = 0 Solving for variable 'x'. Factor a trinomial. (-1 + -5x)(7 + -8x) = 0Subproblem 1
Set the factor '(-1 + -5x)' equal to zero and attempt to solve: Simplifying -1 + -5x = 0 Solving -1 + -5x = 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 + -5x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -5x = 0 + 1 -5x = 0 + 1 Combine like terms: 0 + 1 = 1 -5x = 1 Divide each side by '-5'. x = -0.2 Simplifying x = -0.2Subproblem 2
Set the factor '(7 + -8x)' equal to zero and attempt to solve: Simplifying 7 + -8x = 0 Solving 7 + -8x = 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 + -8x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -8x = 0 + -7 -8x = 0 + -7 Combine like terms: 0 + -7 = -7 -8x = -7 Divide each side by '-8'. x = 0.875 Simplifying x = 0.875Solution
x = {-0.2, 0.875}
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