Express the function h (x)=(x-3)^2 in the form (f of g)(x). f (x)=?? g (x)=??

Question

Please provide the answer and process. I'm very confused 

Answer 1

f(x) = x²

g(x) = x-3

 

h(x) = (fog)(x) = f(x-3) = (x-3)²

Answer 2

f(x) = x²

g(x) = x - 3

f(g(x) = (x - 3)²