兩條中一數學題`吾該快d!!!

2010-02-21 6:39 am
[ ] 裡的是為power也!

1. If 4 is the coefficient of the term containing a[5] in the expansion of

(3a[4]+2a[2]+5)(2a[m]),find the value of m .

2.Write down two polynomials where each has 3 unlike terms and their

difference is 2x-3xy.

吾該快d``就黎要交喇 >3<

第1條其實比式我就得;但系要解釋

重有第1題既答案系3 << 吾知點計出黎 = =
更新1:

jackychan1945;乜你咁衰嫁-,-

回答 (2)

2010-02-21 1:37 pm
✔ 最佳答案
1. m=3
因為只睇數字時(3+2+5)(2)
只有(2)(2)先係4
(2a[2])(2a[m])=4a[5]
m=3

2. 吾明
參考: me
2010-02-21 6:58 am
唔話你聽等你心思思~=p


收錄日期: 2021-04-19 21:29:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100220000051KK01945

檢視 Wayback Machine 備份