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If a+b+c=0 and omega,omega^2 are imagina...

If `a+b+c=0` and `omega,omega^2` are imaginary cube roots of unity, then `(a+bomega+comega^2)^2+(a+bomega^2+comega)^3=` 3abc (b) 6abc (c) 9 abc (d) 27 abc

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