Question

the sum of first n terms of an ap is 3 nsquare + 6n then find the nth term of this ap​

Answer 1

Answer:

6n + 3

Step-by-step explanation:

Tn = S n - S (n-1)

= 3n^2 + 6n - [3(n-1)^2 + 6(n-1)]

= 6n + 3

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