展開以下各題:
1) (y-4)*2
2) (2a+b)*2
*2=2次方
數學(展開)
2007-08-23 12:16 am
回答 (2)
2007-08-23 12:26 am
✔ 最佳答案
1. (y-4)*2= (y-4)(y-4)
= y(y-4) - 4(y-4)
= y*2 -4y - 4y + 16
= y*2 - 8y + 16
2. (2a + b)*2
= (2a + b) (2a + b)
= 2a(2a + b) + b(2a + b)
= 4a*2 + 2ab + 2ab + b*2
= 4a*2 + 4ab + b*2
收錄日期: 2021-04-13 16:33:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070822000051KK03545