x^2+2x+y^2-6y+10=0,所以x^2+2x+1+y^2-6y+9=0,(x^2+2x+1)+(y^2-6y+9)=0,所以(x+1)^2+(y-3)^2=0,所以x+1=0,y-3=0,x=-1,y=3所以(x+y)^2=4
x^2+2x+y^2-6y+10=0(x+1)²+(y-3)²=0∴x=-1,y=3(x+y)²=(-1+3)²=4
原式可变化为(x+1)^2+(y-3)^2=0,所以x=-1,y=3,求式为4
真还不确定呢!少条件吧!