Suppose p not equal to 0.Prove that the equation
px2(<2係square 唔識打)+(p+q)x+q=0
has two unqual real roots unless p=q
F4 Maths Question!
2008-09-02 2:28 am
回答 (1)
2008-09-02 2:38 am
✔ 最佳答案
the equation has two unqual real roots unless p=q discriminant=0
(p+q)^2-4pq=0
(p-q)^2=0
p-q=0
p=q
收錄日期: 2021-04-22 00:36:48
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https://hk.answers.yahoo.com/question/index?qid=20080901000051KK01806