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Simplifying 7x(x + -5) + 2(x + -5) = 0 Reorder the terms: 7x(-5 + x) + 2(x + -5) = 0 (-5 * 7x + x * 7x) + 2(x + -5) = 0 (-35x + 7x2) + 2(x + -5) = 0 Reorder the terms: -35x + 7x2 + 2(-5 + x) = 0 -35x + 7x2 + (-5 * 2 + x * 2) = 0 -35x + 7x2 + (-10 + 2x) = 0 Reorder the terms: -10 + -35x + 2x + 7x2 = 0 Combine like terms: -35x + 2x = -33x -10 + -33x + 7x2 = 0 Solving -10 + -33x + 7x2 = 0 Solving for variable 'x'. Factor a trinomial. (-2 + -7x)(5 + -1x) = 0Subproblem 1
Set the factor '(-2 + -7x)' equal to zero and attempt to solve: Simplifying -2 + -7x = 0 Solving -2 + -7x = 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 + -7x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -7x = 0 + 2 -7x = 0 + 2 Combine like terms: 0 + 2 = 2 -7x = 2 Divide each side by '-7'. x = -0.2857142857 Simplifying x = -0.2857142857Subproblem 2
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 = 5Solution
x = {-0.2857142857, 5}
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