Answer
$\dfrac{f(x)}{g(x)}$;
$g(x)$
Work Step by Step
RECALL:
The function notation $\frac{f}{g}(x)$ means the functions $f$ and $g$ will be divided. Note, however, that $g(x)$ cannot be equal to zero since the division of $0$ is not allowed.
Thus, the missing expressions in the given statement are:
$\dfrac{f(x)}{g(x)}$;
$g(x)$