it's given that f(x) = v^5 + v^3 + v. So I need to find inverse of (3) and f(f inverse of 2).

I figured out the first, which is relatively easy.

v^5 + v^3 + v = 3, where i get v = 1. So inverse of (3) is 1.

But how do I go about the second part? I know that first I should find the inverse of (2) and then find f(x).