Function Decomposition
Given the composition h(x)=f(g(x))\displaystyle {h}{\left({x}\right)}={f{{\left({g{{\left({x}\right)}}}\right)}}}

If h(x)=(x+9)3\displaystyle {h}{\left({x}\right)}={\left({x}+{9}\right)}^{{3}} and f(x)=x3\displaystyle {f{{\left({x}\right)}}}={x}^{{3}}, find the function g(x)\displaystyle {g{{\left({x}\right)}}}.
g(x)\displaystyle {g{{\left({x}\right)}}}=