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If omega is an imaginary cube root of un...

If `omega` is an imaginary cube root of unity, then `(1+omega-omega^2)^7` is equal to `128omega` (b) `-128omega` `128omega^2` (d) `-128omega^2`

A

`128 omega`

B

`-128 omega`

C

`128 omega^(2) `

D

`-128 omega^(2)`

Text Solution

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The correct Answer is:
D
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