Question 1157887
f is {{{2x^2+1}}}
and
g is {{{7x-9}}}




---------------------------
(d)
(g ∘ g)(x)


(e)
(f ∘ f)(−2)
---------------------------



Those mean  {{{g(g(x))=7(7x-9)-9=49x-63-9=highlight(49x-72)}}}

and

{{{f(f(x))=2(2x^2+1)^2+1}}}, which you should simplify; but to evaluate for x at -2, substitute  -2 for x, and evaluate:  {{{2((-2)^2+1)^2+1=2(5)^2+1=highlight(51)}}}.