已知x^2+y^2--6x--2y+10=0,求x+y/x--y

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/08 00:45:33

x^2+y^2-6x-2y+10=0
x^2-6x+9+y^2-2y+1=0
(x-3)^2+(y-1)^2=0
x=3,y=1
(x+y)/(x-y)
=4/2
=2

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