(a+b)²等於咩???? 急!

wingyan

2008-03-12 12:34 am

(a+b)²等於咩?

thz for your answer!!!!

回答 (2)

[匿名]

2008-03-12 12:36 am

✔ 最佳答案

(a+b)²
=(a+b)(a+b)
= a² +2ab +b²

參考: me

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用戶89222

2008-03-12 12:35 am

(a+b)²
= (a+b) * (a+b)
= a*a + a*b + b*a + b*b
=a² + 2ab + b²#

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收錄日期: 2021-05-01 17:14:15
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