97×7/8×97怎么简便？急！
答案:1 悬赏:30 手机版
解决时间 2021-11-21 19:38
- 提问者网友：欺烟
- 2021-11-21 00:14
97×7/8×97怎么简便？急！
最佳答案
- 五星知识达人网友：风格不统一
- 2021-11-21 00:44
=97^2×7/8
=(96+1)^2×7/8
=(96^2+2×96+1)×7/8
=96×96×7/8+2×96×7/8+7/8
=96×12×7+2×12×7+7/8
=12×7×(96+2)+7/8
=84×98+7/8
=84×(100-2)+7/8
=84×100-84×2+7/8
=8400-168+7/8
=8232.875
=(96+1)^2×7/8
=(96^2+2×96+1)×7/8
=96×96×7/8+2×96×7/8+7/8
=96×12×7+2×12×7+7/8
=12×7×(96+2)+7/8
=84×98+7/8
=84×(100-2)+7/8
=84×100-84×2+7/8
=8400-168+7/8
=8232.875
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯