123-1-2-3123-1-2-3f(x)g(x)

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

Write an equation for h(x)\displaystyle {h}{\left({x}\right)}

h(x)\displaystyle {h}{\left({x}\right)}=