$\left\{8,3\right\}$  

 $\left\{4,6\right\}$  

 $\left\{-4,-6\right\}$  

 $\left\{12,2\right\}$  

 $\left\{12,\ 6\right\}$  

 $\left\{-9,-6\right\}$  

 $\left\{9,6\right\}$  

 $\left\{9,\ -6\right\}$  

 $\left\{-3,20\right\}$  

 $\left\{-\frac{3}{5},\ 4\right\}$  

 $\left\{-4,\ \frac{3}{5}\right\}$  

 $\left\{-20,3\right\}$  

 $\left\{3,5,-2\right\}$  

 $\left\{2,-5\right\}$  

 $\left\{-2,5\right\}$  

 $\left\{-6,15\right\}$  

 $\left\{\frac{6}{7},\frac{1}{2}\right\}$  

 $\left\{7,12\right\}$  

 $\left\{-7,-12\right\}$  

 $\left\{-\frac{1}{2},-\frac{6}{7}\right\}$  

 $\left\{6\right\}$  

 $\left\{\frac{2}{3}\right\}$  

 $\left\{-6,6\right\}$  

 $\left\{\pm\frac{2}{3}\right\}$