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Simplifying (2x + -2)(5x + 9) = 0 Reorder the terms: (-2 + 2x)(5x + 9) = 0 Reorder the terms: (-2 + 2x)(9 + 5x) = 0 Multiply (-2 + 2x) * (9 + 5x) (-2(9 + 5x) + 2x * (9 + 5x)) = 0 ((9 * -2 + 5x * -2) + 2x * (9 + 5x)) = 0 ((-18 + -10x) + 2x * (9 + 5x)) = 0 (-18 + -10x + (9 * 2x + 5x * 2x)) = 0 (-18 + -10x + (18x + 10x2)) = 0 Combine like terms: -10x + 18x = 8x (-18 + 8x + 10x2) = 0 Solving -18 + 8x + 10x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-9 + 4x + 5x2) = 0 Factor a trinomial. 2((-9 + -5x)(1 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-9 + -5x)' equal to zero and attempt to solve: Simplifying -9 + -5x = 0 Solving -9 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -5x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -5x = 0 + 9 -5x = 0 + 9 Combine like terms: 0 + 9 = 9 -5x = 9 Divide each side by '-5'. x = -1.8 Simplifying x = -1.8Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 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 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {-1.8, 1}
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