(a1+a2+a3```````````````+an-1)(a2+a3
a4````````````````+an)(a2+a3+a4````````````an-1)(a1+a2+a3````````+an)=?
问道数学题？/
答案:4 悬赏:30 手机版
解决时间 2021-04-23 21:50
- 提问者网友：最美的风景
- 2021-04-23 03:31
最佳答案
- 五星知识达人网友：怙棘
- 2021-04-23 03:54
当a=0时
(a1+a2+a3```````````````+an-1)(a2+a3
a4````````````````+an)(a2+a3+a4````````````an-1)(a1+a2+a3````````+an)=0
全部回答
- 1楼网友：话散在刀尖上
- 2021-04-23 06:26
(a1+a2+a3```````````````+an-1)(a2+a3
a4````````````````+an)(a2+a3+a4````````````an-1)(a1+a2+a3````````+an)
= a(1+2+3``````````````+n-1)(2+3+4`````````````+n)(2+3+4````````````+n-1)(1+2+3````````+n)
=a[(2+n)2/n]2[(1+n)2/n]2
- 2楼网友：上分大魔王
- 2021-04-23 05:01
我不是电脑！
- 3楼网友：鱼忧
- 2021-04-23 04:49
8
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