Question

if the sum of 'N' terms of an AP is 3n2-2n. find the nth term of that AP​

Answer 1

Sn = 3n²-2n

Sn-1 = 3(n-1)²- 2(n-1) == 3n²+3-6n-2n+2 = 3n²-8n+5

An = Sn - Sn-1 == 6n-5

Answer 2

Answer:

would be the correct answer