Saved Bookmarks
| 1. |
If alpha, beeta are roots of x^2 + 5x + a = 0 and 2alpha + 5beeta = -1, then a is equal to? |
|
Answer»
alpha = -b/a alpha= -5/1 alpha= -5. beeta = c/a beeta = a/ 1 beeta = a. 2(alpha)+5(beeta)= -1 2(-5)+5(a)= -1 -10 + 5a = -1 5a= -1+10 5a = 9 a= 9/5 |
|