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If omega is a complex cube root of unity...

If `omega` is a complex cube root of unity, then `(a+b omega+c omega^(2))/(c+a omega+b omega^(2))+(c+a omega+b omega^(2))/(a +b omega+c omega^(2))+(b+c omega+a omega^(2))/(b+c omega+a omega^(5))=`

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