Consider the function f(x)\displaystyle {f{{\left({x}\right)}}} whose second derivative is f(x)=10x+4sin(x)\displaystyle {f}{''}{\left({x}\right)}={10}{x}+{4}{\sin{{\left({x}\right)}}}.

If f(0)=4\displaystyle {f{{\left({0}\right)}}}={4} and f(0)=2\displaystyle {f}'{\left({0}\right)}={2}, what is f(x)\displaystyle {f{{\left({x}\right)}}}?

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