x121x21x22多少展开全部-(x-1)2(1+x)2(1+x2)2=-【(x-1)(1+x)(1+x2)】2=-【(x2-1)(1+x2)】2=【x^4-1】2=-(x^8-2x^4+1)=-x^8+2x^4-12,请问x12x13(x-1)^2.(x+1)^3=(x^2-1)^2.(x+1)=(x^4-2x^2+1)(x+1)=x^5-2x^3+x+x^4-2x^2+1=x^5+x^4-2x^3-2x^2+x+1(x-1)2+(x-1)(x+1)=(x-1)3,1plusequalWhokno