更新1:
2/[(a-1)(a-2)]+3/[(a-1)(a+2)]-4/[(a+2)(a-2)]
please answer this question
回答 (2)
2007-07-15 7:38 pm
✔ 最佳答案
2 / (a-1) (a-2) + 3 / (a-1) (a+2) - 4 / (a+2) (a-2)= [2(a+2) + 3(a-2) - 4(a-1)] / (a-1) (a+2) (a-2)
= (2a + 4 + 3a - 6 - 4a + 4) / (a-1) (a+2) (a-2)
= (a+2) / (a-1) (a+2) (a-2)
= 1 / (a-1) (a-2)
2007-07-15 6:36 pm
I want to try but I think the question may be not complete.
收錄日期: 2021-04-18 22:40:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070715000051KK00598