1.

If 1,omega,omega^2 are the cube roots of unity then prove the followingi) (1-omega+omega^2) + (1+omega-omega^2)^5=32ii) (x+y+z)(x+yomega+zomega^2)(x+yomega^2+zomega)=x^3+y^3+z^3-3xyz

Answer»


ANSWER :`i) =-32(-1)=32=R.H.S.`
`II)=x^3+y^3+z^3-3xyz=R.H.S`


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