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Simplifying -1x2 + y2 + 2xy + 1 = -1x2 + y2 + 2xy + 9 Reorder the terms: 1 + 2xy + -1x2 + y2 = -1x2 + y2 + 2xy + 9 Reorder the terms: 1 + 2xy + -1x2 + y2 = 9 + 2xy + -1x2 + y2 Add '-2xy' to each side of the equation. 1 + 2xy + -1x2 + -2xy + y2 = 9 + 2xy + -1x2 + -2xy + y2 Reorder the terms: 1 + 2xy + -2xy + -1x2 + y2 = 9 + 2xy + -1x2 + -2xy + y2 Combine like terms: 2xy + -2xy = 0 1 + 0 + -1x2 + y2 = 9 + 2xy + -1x2 + -2xy + y2 1 + -1x2 + y2 = 9 + 2xy + -1x2 + -2xy + y2 Reorder the terms: 1 + -1x2 + y2 = 9 + 2xy + -2xy + -1x2 + y2 Combine like terms: 2xy + -2xy = 0 1 + -1x2 + y2 = 9 + 0 + -1x2 + y2 1 + -1x2 + y2 = 9 + -1x2 + y2 Add 'x2' to each side of the equation. 1 + -1x2 + x2 + y2 = 9 + -1x2 + x2 + y2 Combine like terms: -1x2 + x2 = 0 1 + 0 + y2 = 9 + -1x2 + x2 + y2 1 + y2 = 9 + -1x2 + x2 + y2 Combine like terms: -1x2 + x2 = 0 1 + y2 = 9 + 0 + y2 1 + y2 = 9 + y2 Add '-1y2' to each side of the equation. 1 + y2 + -1y2 = 9 + y2 + -1y2 Combine like terms: y2 + -1y2 = 0 1 + 0 = 9 + y2 + -1y2 1 = 9 + y2 + -1y2 Combine like terms: y2 + -1y2 = 0 1 = 9 + 0 1 = 9 Solving 1 = 9 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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