Given the following functions, find each of the following. Simplify completely.

f(x)=x2+14x+49\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}+{14}{x}+{49}

g(x)=x+7\displaystyle {g{{\left({x}\right)}}}={x}+{7}

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

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