Find two nontrivial functions f(x)\displaystyle {f{{\left({x}\right)}}} and g(x)\displaystyle {g{{\left({x}\right)}}} so f(g(x))=5(x+1)6\displaystyle {f{{\left({g{{\left({x}\right)}}}\right)}}}=\frac{{5}}{{\left({x}+{1}\right)}^{{6}}}

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