1234²-1233×1235 (简便算法
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 06:05:36
1234²-1233×1235 (简便算法
1234²-1233×1235
=1234²-(1234-1)(1234+1)
=1234²-(1234²-1)
=1234²-1234²+1
=1
1234²-1233×1235
=1234²-(1234-1)(1234+1)
=1234²-(1234²-1)
=1
1234*1234-(1234+1)*(1234-1)=1234*1234-4*4+1*1=1