x^2-4x+y^2-10y+29=0x^2-4x+4+(y-10y+25)=0(x-2)^2+(y-5)^2=0x-2=0 x=2y-5=0 y=5x^2+2xy+y^2=(x+y)^2=(2+5)^2=7^2=49
x^2-4x+y^2-10y+29=0(x-2)^2+(y-5)^2=0所以 x=2 , y=5x^2+2xy+y^2=(x+y)^2=(2+5)^2=49
