maths
回答 (1)
2008-09-17 6:23 am
✔ 最佳答案
1-6x+9(x^2)=x^28(x^2)-6x+1=0
(4x-1)(2X-1)=0
x=1/4 or x=1/2
收錄日期: 2021-04-20 18:38:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080916000051KK02257