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Simplifying (4y + -5x)(2y + 7x) = 0 Reorder the terms: (-5x + 4y)(2y + 7x) = 0 Reorder the terms: (-5x + 4y)(7x + 2y) = 0 Multiply (-5x + 4y) * (7x + 2y) (-5x * (7x + 2y) + 4y * (7x + 2y)) = 0 ((7x * -5x + 2y * -5x) + 4y * (7x + 2y)) = 0 Reorder the terms: ((-10xy + -35x2) + 4y * (7x + 2y)) = 0 ((-10xy + -35x2) + 4y * (7x + 2y)) = 0 (-10xy + -35x2 + (7x * 4y + 2y * 4y)) = 0 (-10xy + -35x2 + (28xy + 8y2)) = 0 Reorder the terms: (-10xy + 28xy + -35x2 + 8y2) = 0 Combine like terms: -10xy + 28xy = 18xy (18xy + -35x2 + 8y2) = 0 Solving 18xy + -35x2 + 8y2 = 0 Solving for variable 'x'. Factor a trinomial. (-7x + -2y)(5x + -4y) = 0Subproblem 1
Set the factor '(-7x + -2y)' equal to zero and attempt to solve: Simplifying -7x + -2y = 0 Solving -7x + -2y = 0 Move all terms containing x to the left, all other terms to the right. Add '2y' to each side of the equation. -7x + -2y + 2y = 0 + 2y Combine like terms: -2y + 2y = 0 -7x + 0 = 0 + 2y -7x = 0 + 2y Remove the zero: -7x = 2y Divide each side by '-7'. x = -0.2857142857y Simplifying x = -0.2857142857ySubproblem 2
Set the factor '(5x + -4y)' equal to zero and attempt to solve: Simplifying 5x + -4y = 0 Solving 5x + -4y = 0 Move all terms containing x to the left, all other terms to the right. Add '4y' to each side of the equation. 5x + -4y + 4y = 0 + 4y Combine like terms: -4y + 4y = 0 5x + 0 = 0 + 4y 5x = 0 + 4y Remove the zero: 5x = 4y Divide each side by '5'. x = 0.8y Simplifying x = 0.8ySolution
x = {-0.2857142857y, 0.8y}
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