1.

If omega is an imaginary cube root of unity, then the value of (2 - omega )(2 - omega^(2) ) + 2(3 - omega )(3 - omega^(2)) + .... .... + (n - 1)(n - omega)(n -omega^(2)) is

Answer»

`(N^(2))/4(n+1)^(2)-n`
`(n^(2))/4(n+1)^(2)+n`
`(n^(2))/4(n+1)^(2)`
`(n^(2))/4(n+1)^(2)-n`

ANSWER :A::D


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