已知5x눀-2xy+y눀+4x+1=0,求x,y的值

2025-01-03 08:42:36
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回答1:

5x²-2xy+y²+4x+1=0
x²-2xy+y²+4x²+4x+1=0
(x-y)²+(2x+1)²=0
2x+1=0
x-y=0
x=-1/2
y=-1/2