amaths

2008-02-06 4:48 am
http://i270.photobucket.com/albums/jj88/ucc041087/5-12.jpg
help me to answer the Q1 and Q2 above .thz!~

回答 (1)

2008-02-06 5:51 am


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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080205000051KK03524

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