若 (x+2) (x+1)
4 - 4 = 48 求x=?
唔識計...幫下忙啦/...
2007-03-24 1:50 am
回答 (2)
2007-03-28 10:16 am
✔ 最佳答案
4x+2 - 4x+1 = 48 (4x)(4)2 - (4x)(4)1= 48
16 (4x) - 4 (4x)= 48
12 (4x) = 48
4x = 4
4x = 41
x = 1
2007-03-24 9:05 am
(x+2)(x+1)/4 -4 =48
(x+2)(x+1)/0 =48
(x+2)(x+1)=0
x=-2 or -1
(x+2)(x+1)/0 =48
(x+2)(x+1)=0
x=-2 or -1
收錄日期: 2021-04-12 21:19:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070323000051KK02413