1) using the expansion of (1-1/8)^1/3, evaluate ^3√7
2 find the value of x and n if the first three terms in the expansion of (1+ax)^n are 1+15x+90x^2
THX!!
BINOMIAL!!
2010-01-22 10:35 am
回答 (1)
2010-01-23 6:29 am
✔ 最佳答案
Please see the solution below:圖片參考：http://img230.imageshack.us/img230/449/binomialxx.png
2010-01-22 22:29:09 補充：
http://img230.imageshack.us/img230/449/binomialxx.png
收錄日期: 2021-04-23 23:21:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100122000051KK00146