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Simplifying (7x + 5)(x + -5) = 0 Reorder the terms: (5 + 7x)(x + -5) = 0 Reorder the terms: (5 + 7x)(-5 + x) = 0 Multiply (5 + 7x) * (-5 + x) (5(-5 + x) + 7x * (-5 + x)) = 0 ((-5 * 5 + x * 5) + 7x * (-5 + x)) = 0 ((-25 + 5x) + 7x * (-5 + x)) = 0 (-25 + 5x + (-5 * 7x + x * 7x)) = 0 (-25 + 5x + (-35x + 7x2)) = 0 Combine like terms: 5x + -35x = -30x (-25 + -30x + 7x2) = 0 Solving -25 + -30x + 7x2 = 0 Solving for variable 'x'. Factor a trinomial. (-5 + -7x)(5 + -1x) = 0Subproblem 1
Set the factor '(-5 + -7x)' equal to zero and attempt to solve: Simplifying -5 + -7x = 0 Solving -5 + -7x = 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 + -7x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7x = 0 + 5 -7x = 0 + 5 Combine like terms: 0 + 5 = 5 -7x = 5 Divide each side by '-7'. x = -0.7142857143 Simplifying x = -0.7142857143Subproblem 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 = {-0.7142857143, 5}
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