Hi I am sorry, did you mean 5x^2 - 11x + 4 = 0? If yes, then 1/a + 1/b = 0
If not, then there's only 1 answer.
Note that 1a+1b=aab+bab=a+bab
Now, we can use Vieta's formula (−ba=115) to find a+b.
We can also use ca=45 to find ab.
This means 1a+1b=11545=114