计算1.23450.23452.469-1.2345^3-1.2345*0.2345^2

分类: 作业答案 • 2021-11-12 22:44:00

问题描述：

计算1.2345*0.2345*2.469-1.2345^3-1.2345*0.2345^2

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

计算1.2345*0.2345*2.469-1.2345^3-1.2345*0.2345^2