解不等式問題 ~~ thx~
2008-10-07 8:05 pm
Find the value of k if the equation x^2 - kx + 9 = 0 has two distinct real roots
回答 (2)
2008-10-07 8:33 pm
✔ 最佳答案
Δ>0(- k) 2 -4(1)(9)>0
k2-36>0
k2>36
k<-6 or k>6//
收錄日期: 2021-04-23 20:36:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081007000051KK00748