Non identity functions

How to express the function in the f o g by using non-identity functions for f and g ?

f(x) = (8x+x^2)^4

{f(x), g(x)} = ?

Thank you!

They are asking you what two functions come together to make this F(x) (not f(x)!).

f(x) = x^4

g(x) = 8x+x^2

f(g(x)) = (8x+x^2)^4

BINGO!

Non identity functions

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