x^5-y^5=x^5 - x^3*y^2 + x^3*y^2 - y^5=(x^5 - x^3*y^2)+(x^3*y^2 - y^5)=x^3(x^2 - y^2)+y^2(x^3 - y^3)=x^3(x+y)(x-y)+y^2(x-y)(x^2+xy+y^2)=(x-y)(x^4+ x^3*y + x^2*y^2 + x*y^3 + y^4)我就做到这一步了,后头的...