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Simplifying 20x2 + -19xy + -28y2 = 0 Reorder the terms: -19xy + 20x2 + -28y2 = 0 Solving -19xy + 20x2 + -28y2 = 0 Solving for variable 'x'. Factor a trinomial. (4x + -7y)(5x + 4y) = 0Subproblem 1
Set the factor '(4x + -7y)' equal to zero and attempt to solve: Simplifying 4x + -7y = 0 Solving 4x + -7y = 0 Move all terms containing x to the left, all other terms to the right. Add '7y' to each side of the equation. 4x + -7y + 7y = 0 + 7y Combine like terms: -7y + 7y = 0 4x + 0 = 0 + 7y 4x = 0 + 7y Remove the zero: 4x = 7y Divide each side by '4'. x = 1.75y Simplifying x = 1.75ySubproblem 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 = {1.75y, -0.8y}
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