Question

Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

f(x)=8/x and g(x)=8/x

Answer 1

for f(g(x)) put g(x) in place of x in f(x)
f(g(x))=8/(8/x)
simplify you will get f(g(x))=x
do the same for g(f(x))