1、若X²+y²+½=x+y,求x、y的值
问题描述：
1、若X²+y²+½=x+y,求x、y的值
答
X²+y²+½=x+y
X²-x+1/4+y²-y+1/4=0
(x-1/2)^2+(y-1/2)^2=0
(x-1/2)^2=0,x=1/2
(y-1/2)^2=0,y=1/2