maths question
回答 (4)
2013-06-12 1:00 am
✔ 最佳答案
(c + 1)(c + 3)= c(c + 3) + 1(c + 3)
= c^2 + 3c + c + 3
= c^2 + 4c + 3
c^2即是c的2次方
2013-06-13 10:23 pm
(c+1)(c+3)
=c²+3c+c+3
=c²+4c+3
=c²+3c+c+3
=c²+4c+3
2013-06-12 4:30 am
收錄日期: 2021-04-23 23:19:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130611000051KK00167