如問題，為何-2乘-2等如4
Don't tell me 負負得正!沒有分的！
數學問題-------Why -2x-2=4
2007-09-18 4:05 am
回答 (2)
2007-09-27 4:51 am
because -2 x -2
= -1 x -1 x 2 x 2
= (-1 x -1) x 2 x 2
= 1 x 2 x 2
=4
so -2 x -2 = 4
= -1 x -1 x 2 x 2
= (-1 x -1) x 2 x 2
= 1 x 2 x 2
=4
so -2 x -2 = 4
參考: me
收錄日期: 2021-04-14 19:43:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070917000051KK03278