Consider the quadratic equation（3p+1）x²+（p+3）x+1=0
（b）Kelvin claims that if the sum of its roots is equal to the product of its roots,than its roots must be distinct.Do you agree?explain your answer.
請求各位大大教我做這條數學題目，謝謝解答。?
2016-10-16 11:34 am
回答 (1)
2016-10-16 11:44 am
✔ 最佳答案
Sol－(p+3)/(3p+1)=1/(3p+1)
－p－3=1
p=－4
D=(p+3)^2－4*(3p+1)*1
=(－4+3)^2－4*(－3+1)
=1+8
=9>0
agree
D>0 than its roots must be distinct.
收錄日期: 2021-04-20 16:33:37
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