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Tìm x,y thỏa mãn: x^2-2xy+3y-5x+7=0
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Tìm x,y thỏa mãn: x^2-2xy+3y-5x+7=0

User CHENJIAN
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I think there's an error with this question. Mind to check it back and tell me the detail?

User Diego Saa
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