If 1 , omega , omega^(2) are the cube ro...

If `1 , omega , omega^(2)` are the cube roots of unity , then `(x + y + z) (z + y omega + zomega^(2)) ( x + y omega^(2) + z omega) = `

`x^(3) + y^(3) + z^(3)`

`x^(3) + y^(3) + z^(3) - 3xyz `

`x^(3) + y^(3) + z^(3) + 3xyz`

`x^(3) + y^(3) + z^(3) - 6xyz`

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