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Simplifying (x + -3)(5x + 9) = 0 Reorder the terms: (-3 + x)(5x + 9) = 0 Reorder the terms: (-3 + x)(9 + 5x) = 0 Multiply (-3 + x) * (9 + 5x) (-3(9 + 5x) + x(9 + 5x)) = 0 ((9 * -3 + 5x * -3) + x(9 + 5x)) = 0 ((-27 + -15x) + x(9 + 5x)) = 0 (-27 + -15x + (9 * x + 5x * x)) = 0 (-27 + -15x + (9x + 5x2)) = 0 Combine like terms: -15x + 9x = -6x (-27 + -6x + 5x2) = 0 Solving -27 + -6x + 5x2 = 0 Solving for variable 'x'. Factor a trinomial. (-9 + -5x)(3 + -1x) = 0Subproblem 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 '(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 = 3Solution
x = {-1.8, 3}
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