已知（X-Y+3）²+根号2-Y=0,求X+Y的值

已知（X-Y+3）²+根号2-Y=0,求X+Y的值
已知（X-Y+3）²+根号2-Y=0,求X+Y的值

已知（X-Y+3）²+根号2-Y=0,求X+Y的值
∵（X-Y+3）²+根号(2-Y)=0
∴x-y+3=0 2-y=0
y=2 x=-1
∴x+y=-1+2=1

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