www.hndl.net > 2016x20172017-2017x20162016

2016x20172017-2017x20162016

原式 =2016x2017x10001-2017x2016x10001 =2016x2017x(10001-10001) =2016x2017x0 =0

2016x20172017-2017x20162016 =2016x20172017-2017x10001x2016 =2016x20172017-20172017x2016 =2016x(20172017-20172017) =2016x0 =0

原式=2016×(2017×10001)-2017×(2016×10001)=0

分解因数的话前后两个数是一样的,所以结果是0

简便计算方法

2016x2017一2015x2015 =2016x(2015+2)-2015x2015 =2016x2015+2016x2-2015x2015 =(2016-2015)x2015+4032 =1x2015+4032 =2015+4032 =6047

2017x2017+2016x2016-2017x2016-2015x2016 =2017x(2017-2016)+2016x(2016-2015) =2017x1+2016x1 =2017+2016 =4033

2017 =2016-1-2015/2017x(2017-2) =2016/解:原式=2016/2017x2 =2016-4032/2017x2015 =2016/2017 =2014又2/2017x2017-2016/2017 分析

答案是1. 题意是2017²-(2017-1)×(2017+1)=2017²-(2017²-1²)=2017²-2017²+1²=1

2018×2017-2017×2016-2016×2015+2015×2014=(2018-2016)x2017-(2016-2014)x2015=2x2017-2x2015=2x(2017-2015)=2x2=4 数学(mathematics或maths),是研究数量、结构、变化、空间以及信息等概念的一门学科,从某种角度看属于形式科学的一...

网站地图

All rights reserved Powered by www.hndl.net

copyright ©right 2010-2021。
www.hndl.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com