我知呢D.但為甚麼有時負負會得負?
回答 (1)
2016-12-22 1:10 pm
( -√-1) × ( -√-1 ) = √-1 × √-1 = - 1
收錄日期: 2021-04-11 21:31:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161222034719AAXDl8e