应该是x^2-4x+y^2-10y+29=0吧x^2-4x+y^2-10y+29=0(x^2-4x+4)+(y^2-10y+25)=0(x-2)^2+(y-5)^2=0x=2,y=5代入得x^2y^2+2x^3y^2+x^4y^2=x^2y^2(1+2x+x^2)=x^2y^2(1+x)^2=4*25*9=900祝学习进步！
