( left| begin array ccc 1 & - omega & omega^ 2 - omega & omega^ 2 & 1 omega^ 2 & 1 & - omega end array right|= কত? )

\left|\begin{array}{ccc} 1 & -\omega & \omega^{2} \\ -\omega & \omega^{2} & 1 \\ \omega^{2} & 1 & -\omega \end{array}\right|=\text { কত? }

RU C 18-19

\left|\begin{array}{ccc} 1 & -\omega & \omega^{2} \\ -\omega & \omega^{2} & 1 \\ \omega^{2} & 1 & -\omega \end{array}\right|=\text { কত? }

RU C 18-19