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Simplifying 9x2 + 18xy + 7xy + 14y2 = 0 Reorder the terms: 18xy + 7xy + 9x2 + 14y2 = 0 Combine like terms: 18xy + 7xy = 25xy 25xy + 9x2 + 14y2 = 0 Solving 25xy + 9x2 + 14y2 = 0 Solving for variable 'x'. Factor a trinomial. (9x + 7y)(x + 2y) = 0Subproblem 1
Set the factor '(9x + 7y)' equal to zero and attempt to solve: Simplifying 9x + 7y = 0 Solving 9x + 7y = 0 Move all terms containing x to the left, all other terms to the right. Add '-7y' to each side of the equation. 9x + 7y + -7y = 0 + -7y Combine like terms: 7y + -7y = 0 9x + 0 = 0 + -7y 9x = 0 + -7y Remove the zero: 9x = -7y Divide each side by '9'. x = -0.7777777778y Simplifying x = -0.7777777778ySubproblem 2
Set the factor '(x + 2y)' equal to zero and attempt to solve: Simplifying x + 2y = 0 Solving x + 2y = 0 Move all terms containing x to the left, all other terms to the right. Add '-2y' to each side of the equation. x + 2y + -2y = 0 + -2y Combine like terms: 2y + -2y = 0 x + 0 = 0 + -2y x = 0 + -2y Remove the zero: x = -2y Simplifying x = -2ySolution
x = {-0.7777777778y, -2y}
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