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2x2 5xy
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2x2 5xy
2x2+5xy+2y2-x+y-1
2x2 5xy y2
2x2+5xy+2y2+5x+y-3
2x2 5xy 3y2 0
2x2 5xy
2x2 5xy 12y2
2x2 5xy 3y2
2x2 5xy 6y2
2x2 5xy 2y2
2x2 5xy 6y2 solution