If is a nonreal cube root of unity then 1+2 +3 ^2 2+3 + ^2 + 2+3 + ^2 3+ +2 ^2 is equal to

JEE Advanced Mathematics question

If is a nonreal cube root of unity then

is equal to

Answer: (B)

Using : - , so the first numerator is times its denominator. - ,

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Question ID VK-108069