$\left\{\begin{matrix}C=\frac{108\left(x+2\right)\left(x-1\right)^{3}}{M^{2}}\text{, }&M\neq 0\\C\in \mathrm{C}\text{, }&\left(x=-2\text{ or }x=1\right)\text{ and }M=0\end{matrix}\right.$

$\left\{\begin{matrix}C=\frac{108\left(x+2\right)\left(x-1\right)^{3}}{M^{2}}\text{, }&M\neq 0\\C\in \mathrm{R}\text{, }&\left(x=-2\text{ or }x=1\right)\text{ and }M=0\end{matrix}\right.$

$\left\{\begin{matrix}M=-6iC^{-\frac{1}{2}}\sqrt{-3x-6}\left(x-1\right)^{\frac{3}{2}}\text{; }M=6iC^{-\frac{1}{2}}\sqrt{-3x-6}\left(x-1\right)^{\frac{3}{2}}\text{, }&C\neq 0\\M\in \mathrm{C}\text{, }&\left(x=-2\text{ or }x=1\right)\text{ and }C=0\end{matrix}\right.$

$\left\{\begin{matrix}M=6\sqrt{\frac{3\left(x+2\right)\left(x-1\right)^{3}}{C}}\text{; }M=-6\sqrt{\frac{3\left(x+2\right)\left(x-1\right)^{3}}{C}}\text{, }&\left(x\geq 1\text{ and }C>0\right)\text{ or }\left(C>0\text{ and }x\leq -2\right)\text{ or }\left(x\leq 1\text{ and }x\geq -2\text{ and }C<0\right)\\M\in \mathrm{R}\text{, }&\left(x=-2\text{ or }x=1\right)\text{ and }C=0\end{matrix}\right.$