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Simplifying (4x + 9)(x + -1) = 0 Reorder the terms: (9 + 4x)(x + -1) = 0 Reorder the terms: (9 + 4x)(-1 + x) = 0 Multiply (9 + 4x) * (-1 + x) (9(-1 + x) + 4x * (-1 + x)) = 0 ((-1 * 9 + x * 9) + 4x * (-1 + x)) = 0 ((-9 + 9x) + 4x * (-1 + x)) = 0 (-9 + 9x + (-1 * 4x + x * 4x)) = 0 (-9 + 9x + (-4x + 4x2)) = 0 Combine like terms: 9x + -4x = 5x (-9 + 5x + 4x2) = 0 Solving -9 + 5x + 4x2 = 0 Solving for variable 'x'. Factor a trinomial. (-9 + -4x)(1 + -1x) = 0Subproblem 1
Set the factor '(-9 + -4x)' equal to zero and attempt to solve: Simplifying -9 + -4x = 0 Solving -9 + -4x = 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 + -4x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -4x = 0 + 9 -4x = 0 + 9 Combine like terms: 0 + 9 = 9 -4x = 9 Divide each side by '-4'. x = -2.25 Simplifying x = -2.25Subproblem 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 = {-2.25, 1}
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