If is a complex cube root of unity, then the value of the expression 2 (1+ 1 ) (1+ 1 ^2 )+3 (2+ 1 ) (2+ 1 ^2...

Question

If is a complex cube root of unity, then the value of the expression 2 (1+ 1 ) (1+ 1 ^2 )+3 (2+ 1 ) (2+ 1 ^2 )+ +(n+1) (n+ 1 ) (n+ 1 ^2 ) is ….

Accepted Answer

(A)

MHT CET 2026 Mathematics question