Dscriminate the solutions of the following eawuations.
Please write all the steps
1. x^2 +5x+3+a = 0
2. x^2 +(a+b)x+ab =0
Discriminate ----130a VERY URGENT
2007-08-17 9:05 pm
回答 (1)
2007-08-18 1:56 am
✔ 最佳答案
1.△=25-4(3+a)=13-4a
if a≧13/4,the equation has equal/unequal real roots
if a＜13/4,the equation has no real root
2.△=(a+b)^2-4ab=(a-b)^2≧0
so the equation has equal/unequal real roots
參考: me
收錄日期: 2021-04-22 00:15:14
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https://hk.answers.yahoo.com/question/index?qid=20070817000051KK01834