(a+b)^4=? Plz help?
回答 (3)
2016-09-14 1:20 pm
a^4+4a^3b+6a^2b^2+4ab^3+b^4
2016-11-12 3:40 am
(a+b)^4
=a^4+(4C1)(a^3)(b)+(4C2)(a^2)(b^2)+(4C3)(a)(b^3)+b^4
=a^4+4(a^3)(b)+6(a^2)(b^2)+4a(b^3)+b^4
=a^4+(4C1)(a^3)(b)+(4C2)(a^2)(b^2)+(4C3)(a)(b^3)+b^4
=a^4+4(a^3)(b)+6(a^2)(b^2)+4a(b^3)+b^4
2016-09-26 12:58 am
a^4+4a^3b+6a^2b^2+4ab^3+b^4
收錄日期: 2021-04-18 15:32:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160913052815AATkK8S