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Simplifying (x + y)(x + -1y) = 9000 Multiply (x + y) * (x + -1y) (x(x + -1y) + y(x + -1y)) = 9000 ((x * x + -1y * x) + y(x + -1y)) = 9000 Reorder the terms: ((-1xy + x2) + y(x + -1y)) = 9000 ((-1xy + x2) + y(x + -1y)) = 9000 (-1xy + x2 + (x * y + -1y * y)) = 9000 (-1xy + x2 + (xy + -1y2)) = 9000 Reorder the terms: (-1xy + xy + x2 + -1y2) = 9000 Combine like terms: -1xy + xy = 0 (0 + x2 + -1y2) = 9000 (x2 + -1y2) = 9000 Solving x2 + -1y2 = 9000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'y2' to each side of the equation. x2 + -1y2 + y2 = 9000 + y2 Combine like terms: -1y2 + y2 = 0 x2 + 0 = 9000 + y2 x2 = 9000 + y2 Simplifying x2 = 9000 + y2 Reorder the terms: -9000 + x2 + -1y2 = 9000 + y2 + -9000 + -1y2 Reorder the terms: -9000 + x2 + -1y2 = 9000 + -9000 + y2 + -1y2 Combine like terms: 9000 + -9000 = 0 -9000 + x2 + -1y2 = 0 + y2 + -1y2 -9000 + x2 + -1y2 = y2 + -1y2 Combine like terms: y2 + -1y2 = 0 -9000 + x2 + -1y2 = 0 The solution to this equation could not be determined.
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