Please use bionomial theorem, and nCr
to expand
(1-2x+x^2)^3.
Do I need to convert (1-2x+x^2) into (x-1)^2
using the identity a^2 - 2ab + b^2 = (a-b)^2
???
Thank you.
5 marks
Bionomial Theorem (5m)
2010-06-03 3:01 am
回答 (1)
2010-06-03 3:31 am
收錄日期: 2021-04-23 20:46:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100602000051KK01123