问题描述: 计算a^3/a-1-a^2-a-1要详细过程 1个回答 分类:数学 2014-10-29 问题解答: 我来补答 是a³/(a-1)-a²-a-1吧?= =+ 已知: a³-1 =(a-1)(a²+a+1)则: a³/(a-1)=(a³-1)/(a-1)+1/(a-1)=a²+a+1+1/(a-1)代入原式,得: a³/(a-1)-a²-a-1=a²+a+1+1/(a-1)-a²-a-1=1/(a-1) 展开全文阅读