If \[\omega \]is a complex cube root of unity, then the determinant \[\left| \,\begin{matrix} 2 & 2\omega & -{{\omega }^{2}} \\ 1 & 1 & 1 \\ 1 & -1 & 0 \\ \end{matrix}\, \right|=\]

If \[\omega \]is a complex cube root of unity, then the determinant \[

1.	If \[\omega \]is a complex cube root of unity, then the determinant \[\left\| \,\begin{matrix} 2 & 2\omega & -{{\omega }^{2}} \\ 1 & 1 & 1 \\ 1 & -1 & 0 \\ \end{matrix}\, \right\|=\]
A.	0
B.	1
C.	-1
D.	None of these
Answer» B. 1

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If \[\omega \]is a complex cube root of unity, then the determinant \[\left| \,\begin{matrix} 2 & 2\omega & -{{\omega }^{2}} \\ 1 & 1 & 1 \\ 1 & -1 & 0 \\ \end{matrix}\, \right|=\]

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