Answer
$-x^{2} + 10x - 25$
Work Step by Step
$\hspace{0mm}\underline{-10|}\hspace{5mm}-1\hspace{5mm}0\hspace{5mm}75\hspace{5mm}-250$
$ \hspace{25mm}\underline{10\hspace{0mm}-100\hspace{8mm}250}$
$\hspace{17mm}-1\hspace{3mm}10\hspace{2mm}-25\hspace{8mm}\underline{|0}$