polynomial---pmaths
2007-09-11 2:33 am
a,b,c are real numbers . Prove that if the equation x^3+ax^2+bx+c=0 has two equal roots,then 4(b^2-3ac)(a^2-3b)=(9c-ab)^2
回答 (1)
2007-09-11 2:52 am
✔ 最佳答案
As follows~~~圖片參考：http://i182.photobucket.com/albums/x4/A_Hepburn_1990/polynomial.jpg?t=1189421517
參考: Myself~~~
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https://hk.answers.yahoo.com/question/index?qid=20070910000051KK02720