$\left\{\begin{matrix}A=-\frac{Bx+C}{x_{2}}\text{, }&x_{2}\neq 0\\A\in \mathrm{C}\text{, }&C=-Bx\text{ and }x_{2}=0\end{matrix}\right.$

$\left\{\begin{matrix}B=-\frac{Ax_{2}+C}{x}\text{, }&x\neq 0\\B\in \mathrm{C}\text{, }&C=-Ax_{2}\text{ and }x=0\end{matrix}\right.$

$\left\{\begin{matrix}A=-\frac{Bx+C}{x_{2}}\text{, }&x_{2}\neq 0\\A\in \mathrm{R}\text{, }&C=-Bx\text{ and }x_{2}=0\end{matrix}\right.$

$\left\{\begin{matrix}B=-\frac{Ax_{2}+C}{x}\text{, }&x\neq 0\\B\in \mathrm{R}\text{, }&C=-Ax_{2}\text{ and }x=0\end{matrix}\right.$