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Simplifying (7x + -5)(x + 3) = 0 Reorder the terms: (-5 + 7x)(x + 3) = 0 Reorder the terms: (-5 + 7x)(3 + x) = 0 Multiply (-5 + 7x) * (3 + x) (-5(3 + x) + 7x * (3 + x)) = 0 ((3 * -5 + x * -5) + 7x * (3 + x)) = 0 ((-15 + -5x) + 7x * (3 + x)) = 0 (-15 + -5x + (3 * 7x + x * 7x)) = 0 (-15 + -5x + (21x + 7x2)) = 0 Combine like terms: -5x + 21x = 16x (-15 + 16x + 7x2) = 0 Solving -15 + 16x + 7x2 = 0 Solving for variable 'x'. Factor a trinomial. (-3 + -1x)(5 + -7x) = 0Subproblem 1
Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3Subproblem 2
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 = 0.7142857143Solution
x = {-3, 0.7142857143}
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