问题描述： 计算1.2345*0.2345*2.469-1.2345^3-1.2345*0.2345^2 1个回答 分类：数学 2014-10-28 问题解答： 我来补答 1.2345*0.2345*2.469-1.2345^3-1.2345*0.2345^2=-1.2345*(-0.2345*2.469+1.2345^2+0.2345^2)=-1.2345*(1.2345-0.2345)^2=-1.2345*1^2=-1.2345 展开全文阅读
