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Simplifying (5x + -8)(9 + x) = 0 Reorder the terms: (-8 + 5x)(9 + x) = 0 Multiply (-8 + 5x) * (9 + x) (-8(9 + x) + 5x * (9 + x)) = 0 ((9 * -8 + x * -8) + 5x * (9 + x)) = 0 ((-72 + -8x) + 5x * (9 + x)) = 0 (-72 + -8x + (9 * 5x + x * 5x)) = 0 (-72 + -8x + (45x + 5x2)) = 0 Combine like terms: -8x + 45x = 37x (-72 + 37x + 5x2) = 0 Solving -72 + 37x + 5x2 = 0 Solving for variable 'x'. Factor a trinomial. (-9 + -1x)(8 + -5x) = 0Subproblem 1
Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 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 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9Subproblem 2
Set the factor '(8 + -5x)' equal to zero and attempt to solve: Simplifying 8 + -5x = 0 Solving 8 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -5x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5x = 0 + -8 -5x = 0 + -8 Combine like terms: 0 + -8 = -8 -5x = -8 Divide each side by '-5'. x = 1.6 Simplifying x = 1.6Solution
x = {-9, 1.6}
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