1.

Assertion (A) : (sqrt3+i)^6+(sqrt3-i)^6=-128 Reason (R): If n is a positive integer then (sqrt3+i)^n+(sqrt3-i)^n=2^(n+1)cos(npi)/(6)

Answer»

`2^(n+1)COS(npi)/(2)`
`2^(n+1)cos(npi)/(3)`
`2^(n+1)cos(npi)/(5)`
`2^(n+1)cos(npi)/(6)`

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