唔識點計個答案出黎...大家可唔可以一步步教下我計 thx!!!!!!
如下圖link : http://203.198.184.170:8080/it-school/homepage/3525/Amaths.JPG
收錄日期: 2021-05-03 06:07:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061025000051KK04945