If \[\omega \] is an imaginary cube root of unity, \[{{(1+\omega -{{\omega }^{2}})}^{7}}\]equals [IIT 1998; MP PET 2000]

If \[\omega \] is an imaginary cube root of unity, \[{{(1+\omega -{{\o

1.	If \[\omega \] is an imaginary cube root of unity, \[{{(1+\omega -{{\omega }^{2}})}^{7}}\]equals [IIT 1998; MP PET 2000]
A.	\[128\omega \]
B.	\[-128\omega \]
C.	\[128{{\omega }^{2}}\]
D.	\[-128{{\omega }^{2}}\]
Answer» E.

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If \[\omega \] is an imaginary cube root of unity, \[{{(1+\omega -{{\omega }^{2}})}^{7}}\]equals [IIT 1998; MP PET 2000]

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