If omega(!=1) is a cube root of unity, ...

If `omega(!=1)` is a cube root of unity, and `(1""+omega)^7=""A""+""Bomega` . Then (A, B) equals
`(i.) (0, 1)`
`(ii.) (1, 1)`
`(iii.) (1, 0)`
`(iv.) (-1,1)`

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