@v@超易答 一條maths 咋
回答 (1)
2007-10-14 10:24 pm
✔ 最佳答案
Discriminant = 6^2 - 4(k)(6-k) = 036-24k+4k^2 = 0
k^2 - 6k + 9 = 0
(k-3)^2 = 0
k = 3
收錄日期: 2021-04-13 18:12:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071014000051KK02427