$$F(x)=- { x }^{ 2 } YG(x)= { x }^{ 2 } -3$$
$\left\{\begin{matrix}G=\frac{3-x^{2}}{Yx^{3}}\text{, }&x\neq 0\text{ and }Y\neq 0\\G\in \mathrm{C}\text{, }&\left(x=\sqrt{3}\text{ or }x=-\sqrt{3}\right)\text{ and }Y=0\end{matrix}\right.$
$\left\{\begin{matrix}Y=\frac{3-x^{2}}{Gx^{3}}\text{, }&x\neq 0\text{ and }G\neq 0\\Y\in \mathrm{C}\text{, }&\left(x=\sqrt{3}\text{ or }x=-\sqrt{3}\right)\text{ and }G=0\end{matrix}\right.$
$\left\{\begin{matrix}G=\frac{3-x^{2}}{Yx^{3}}\text{, }&x\neq 0\text{ and }Y\neq 0\\G\in \mathrm{R}\text{, }&Y=0\text{ and }|x|=\sqrt{3}\end{matrix}\right.$
$\left\{\begin{matrix}Y=\frac{3-x^{2}}{Gx^{3}}\text{, }&x\neq 0\text{ and }G\neq 0\\Y\in \mathrm{R}\text{, }&G=0\text{ and }|x|=\sqrt{3}\end{matrix}\right.$