标题: [数学] 2007-12-8 初三 [打印本页]

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作者: 老猫    时间: 2007-12-8 07:12     标题: 2007-12-8 初三

解方程14x^2-4xy+11y^2-88x+34y+149=0.

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作者: xyq2100    时间: 2007-12-8 15:57

x=3 y=-1.

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