Alyn

I was assigned this problem and I'm coming up against a brick wall. Here it is: Given that f(x) = 2x+1 and h(x) = 2x^2+4x+1, find a function g such that f(g(x)) = h(x) I tried to factor 2x^2+4x+1 but ended up with something that didn't work. Am I missing...