Answer
$x^{2} + x + 4 + \frac{21}{x - 4}$
Work Step by Step
$\hspace{0mm}\underline{4|}\hspace{5mm}1\hspace{5mm}-3\hspace{5mm}0\hspace{5mm}5$
$ \hspace{20mm}\underline{4\hspace{7mm}4\hspace{4mm}16}$
$\hspace{8mm}1\hspace{11mm}1\hspace{6mm}4\hspace{4mm}\underline{|21}$