T4=T6即Cn3=Cn5所以n=8则原式=C8 0*(x3)^8*(y2)^0+C8 1*(x3)^7*(y2)^1+C8 2*(x3)^6*(y2)^2+C8 3*(x3)^5*(y2)^3+C8 4*(x3)^4*(y2)^4+C8 5*(x3)^3*(y2)^5+C8 6*(x3)^2*(y2)^6...