Question

ans it as soon as posible...

Answer 1

Given
Sn = 3n² +5n,
Sn-1 = 3n² -n -2.
we need to find Tn....(nth term of series!!!)..
after finding Tn .put n = 1,2,3....and so on....
.... hence option A is correct!!!

see picture!!!..

hope it helped you!!!