Maths-
General
Easy

### Hint:

In this question, we have   is a polynomial function such that . Firstly, we will use the given information to find the value of f(x) and f. Then, we will multiply the equations derived. And later assume g(x) to be f(x)-1 and g to be f-1. Further, we will get the value of f(x) and f and thus we can find the required sum.