3/x+5-x/2=0
thx~~
更新1:
要有步驟
F.4 math
回答 (1)
2008-01-06 7:01 am
✔ 最佳答案
3/x+5-x/2=0 6/2X+(X)(5-X)/2X = 0 (首先張佢通分母)
(6+5X-X^2)/2X =0
-X^2 + 5X +6 =0 (唔好俾個x^2有負號,所以抽個負號出黎)
X^2 -5X -6 =0
(x-6)(X+1) =0
X=6 OR X= -1
參考: me
收錄日期: 2021-04-19 00:12:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080105000051KK04888