find the h(x) and g(u) such that f(x)=g[h(x)]

Question

f(x) = √3x-7

f(x) = 4x²-x-7

Answer 1

h(x) = f(x) and g(u) = u

then f(x) = g(h(x)) = g(f(x) = f(x)

that's the most simple relation

or there are endless other possibilities

such as

h(x)= 2f(x), g(u) =u/2

then

f(x) = g(h(x)) = g(2f(x)) = 2f(x)/2 = f(x)

this would work for either of the definitions of f(x) given in the problem