(x-2)²+(y-1)²=0x=2,y=1【(根号x)+y】/(2根号x)+y+1=[(根号2)+1]/(2根号2)+1+1=5/2+(根号2)/2
x^2+y^2-4x-2y+5=0,(x^2-4x+4)+(y^2-2y+1)=0(x-2)^2+(y-1)^2=0所以(x-2)=0,y-1=0x=2,y=1【根号(X)+Y】/(2根号X)+Y+1=【根号2+1】/2根号2+1+1=1/2+根号2/4+2=5/2+根号2/4