$$\left. \begin{array} { l } { 6 - 4 i } \\ { - 4 - 6 i } \\ { \frac { 5 \pi } { 6 } } \\ { ( 2 \sqrt { 3 } , 2 ) } \end{array} \right.$$
$6-4i,\ -4-6i,\ \frac{5\pi }{6},\ \left(2\sqrt{3},2\right)$
