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Simplifying (7x + -1)(2x + 9) = 0 Reorder the terms: (-1 + 7x)(2x + 9) = 0 Reorder the terms: (-1 + 7x)(9 + 2x) = 0 Multiply (-1 + 7x) * (9 + 2x) (-1(9 + 2x) + 7x * (9 + 2x)) = 0 ((9 * -1 + 2x * -1) + 7x * (9 + 2x)) = 0 ((-9 + -2x) + 7x * (9 + 2x)) = 0 (-9 + -2x + (9 * 7x + 2x * 7x)) = 0 (-9 + -2x + (63x + 14x2)) = 0 Combine like terms: -2x + 63x = 61x (-9 + 61x + 14x2) = 0 Solving -9 + 61x + 14x2 = 0 Solving for variable 'x'. Factor a trinomial. (-9 + -2x)(1 + -7x) = 0Subproblem 1
Set the factor '(-9 + -2x)' equal to zero and attempt to solve: Simplifying -9 + -2x = 0 Solving -9 + -2x = 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 + -2x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2x = 0 + 9 -2x = 0 + 9 Combine like terms: 0 + 9 = 9 -2x = 9 Divide each side by '-2'. x = -4.5 Simplifying x = -4.5Subproblem 2
Set the factor '(1 + -7x)' equal to zero and attempt to solve: Simplifying 1 + -7x = 0 Solving 1 + -7x = 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 + -7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 0 + -1 -7x = 0 + -1 Combine like terms: 0 + -1 = -1 -7x = -1 Divide each side by '-7'. x = 0.1428571429 Simplifying x = 0.1428571429Solution
x = {-4.5, 0.1428571429}
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