F.6 math question
回答 (1)
2008-09-12 7:31 pm
✔ 最佳答案
=(n+6)(n+5)(n+4)(n+3)...(1)/(n+4)(n+3)...(1)=(n+6)(n+5)
=n^2+5n+6n+30
=n^2+11n+30
收錄日期: 2021-05-02 16:53:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080910000051KK01458