Function Composition Given Two Equations
Use the equations below to find each of the following. You should not simplify your answer.


Given that f(x)=x28x\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}-{8}{x} and g(x)=x4\displaystyle {g{{\left({x}\right)}}}={x}-{4}
(a) f(g(x))\displaystyle {f{{\left({g{{\left({x}\right)}}}\right)}}}=   ,


(b) g(f(x))\displaystyle {g{{\left({f{{\left({x}\right)}}}\right)}}}=   ,


(c) f(f(x))\displaystyle {f{{\left({f{{\left({x}\right)}}}\right)}}}=   ,


(d) g(g(x))\displaystyle {g{{\left({g{{\left({x}\right)}}}\right)}}}=   ,