\begin{equation}8x-8y\end{equation}

\begin{equation}x^{2}+xy\end{equation}

\begin{equation}7x^{3}+28\end{equation}

\begin{equation}9x^{3}+25x^{2}\end{equation}

\begin{equation}10x^{3}y^{2}+10xy^{4}\end{equation}

\begin{equation}72x^{4}y^{3}-90x^{2}y^{4}\end{equation}

\begin{equation}8x^{2}y+32y\end{equation}

\begin{equation}70x^{3}-50x^{2}\end{equation}

\begin{equation}70x^{4}+70x^{2}\end{equation}

\begin{equation}30x^{2}+15y^{5}\end{equation}

\begin{equation}(-36)x^{3}+30x\end{equation}

\begin{equation}63y^{3}z+90x^{2}y\end{equation}

\begin{equation}x^{2}+7x\end{equation}

\begin{equation}3x^{3}+30\end{equation}

\begin{equation}4xy+36\end{equation}

\begin{equation}(-36)x^{3}+20x^{4}\end{equation}

\begin{equation}(-3)x^{8}y^{4}+9x^{6}y\end{equation}

\begin{equation}9xy^{2}+27y\end{equation}

\begin{equation}56x^{2}+32x^{3}\end{equation}

\begin{equation}(-14)x^{5}+14x\end{equation}

\begin{equation}72x^{4}+81x^{3}+45x^{2}\end{equation}