Question

find for third term of which SN is equals to n square in the bracket and + 1 the whole square upon 4​

Answer 1

nth term n=(n+2)

1st term = 1 ( 1 + 2 ) = 3

2nd term = 2 ( 2 + 2 ) = 8

3rd term = 3 ( 3 + 2 ) = 1 5