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Simplifying (3x + 7)(4x + -9) = 0 Reorder the terms: (7 + 3x)(4x + -9) = 0 Reorder the terms: (7 + 3x)(-9 + 4x) = 0 Multiply (7 + 3x) * (-9 + 4x) (7(-9 + 4x) + 3x * (-9 + 4x)) = 0 ((-9 * 7 + 4x * 7) + 3x * (-9 + 4x)) = 0 ((-63 + 28x) + 3x * (-9 + 4x)) = 0 (-63 + 28x + (-9 * 3x + 4x * 3x)) = 0 (-63 + 28x + (-27x + 12x2)) = 0 Combine like terms: 28x + -27x = 1x (-63 + 1x + 12x2) = 0 Solving -63 + 1x + 12x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -3x)(9 + -4x) = 0Subproblem 1
Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 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 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333Subproblem 2
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 = 2.25Solution
x = {-2.333333333, 2.25}
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