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Simplifying X2 + -1xy + -2y2 = 18 Solving X2 + -1xy + -2y2 = 18 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add 'xy' to each side of the equation. X2 + -1xy + xy + -2y2 = 18 + xy Combine like terms: -1xy + xy = 0 X2 + 0 + -2y2 = 18 + xy X2 + -2y2 = 18 + xy Add '2y2' to each side of the equation. X2 + -2y2 + 2y2 = 18 + xy + 2y2 Combine like terms: -2y2 + 2y2 = 0 X2 + 0 = 18 + xy + 2y2 X2 = 18 + xy + 2y2 Simplifying X2 = 18 + xy + 2y2 Reorder the terms: -18 + X2 + -1xy + -2y2 = 18 + xy + 2y2 + -18 + -1xy + -2y2 Reorder the terms: -18 + X2 + -1xy + -2y2 = 18 + -18 + xy + -1xy + 2y2 + -2y2 Combine like terms: 18 + -18 = 0 -18 + X2 + -1xy + -2y2 = 0 + xy + -1xy + 2y2 + -2y2 -18 + X2 + -1xy + -2y2 = xy + -1xy + 2y2 + -2y2 Combine like terms: xy + -1xy = 0 -18 + X2 + -1xy + -2y2 = 0 + 2y2 + -2y2 -18 + X2 + -1xy + -2y2 = 2y2 + -2y2 Combine like terms: 2y2 + -2y2 = 0 -18 + X2 + -1xy + -2y2 = 0 The solution to this equation could not be determined.
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