x^2+xy-y^2=0
x(x+y)=y^2
(x+y)/y=y/x
(x/y)+1=y/x
设x/y=m
m+1=1/m
m^2+m-1=0
解m
已知实数x、y满足x2+xy-y2=0,求x\y的值
2个回答
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