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Simplifying x(x + -5)(x + 7) = 0 Reorder the terms: x(-5 + x)(x + 7) = 0 Reorder the terms: x(-5 + x)(7 + x) = 0 Multiply (-5 + x) * (7 + x) x(-5(7 + x) + x(7 + x)) = 0 x((7 * -5 + x * -5) + x(7 + x)) = 0 x((-35 + -5x) + x(7 + x)) = 0 x(-35 + -5x + (7 * x + x * x)) = 0 x(-35 + -5x + (7x + x2)) = 0 Combine like terms: -5x + 7x = 2x x(-35 + 2x + x2) = 0 (-35 * x + 2x * x + x2 * x) = 0 (-35x + 2x2 + x3) = 0 Solving -35x + 2x2 + x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x'. x(-35 + 2x + x2) = 0 Factor a trinomial. x((-7 + -1x)(5 + -1x)) = 0Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7Subproblem 3
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, -7, 5}
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