a即係alpha b即係beta
1.
If a and b are the roots of the equation 10x^2-4x-5=0, find the value of the following.
(a+1/b)(b+1/a)
2.
Let c be a constant. If -2 is a root of the equation 5x^2-4x+c=0, find the other root and the value of c.
3.
If a and b are the roots of the equation x^2+9x+4=0, find the value of the following.
a^3+b^3
F.4數學3題~~help me please.....
2009-10-06 3:53 am
回答 (1)
2009-10-06 4:21 am
✔ 最佳答案
As follows:圖片參考：http://a.imagehost.org/0984/ScreenHunter_01_Oct_05_20_18.gif
圖片參考：http://a.imagehost.org/0667/ScreenHunter_02_Oct_05_20_18.gif
收錄日期: 2021-04-23 20:45:06
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