prove that , `(a+bomega+comega^(2))^(3)+(a+bomega^(2)+comega)^(3)=27abc ` if `a+b+c=0.`
Channel: Doubtnut
Date: 2020-05-09

prove that , `(a+bomega+comega^(2))^(3)+(a+bomega^(2)+comega)^(3)=27abc ` if `a+b+c=0.`