Math, asked by senmaajayj4450, 11 months ago

If the sum of n terms of an A.P. be 3n² + n and its common difference is 6, then its first term is
A. 2
B. 3
C. 1
D. 4

Answers

Answered by kabirsingh18

6

Answer:

Hey there

sn = 3n² + n

s1 = 3×1 + 1

s1 = 4

First term = 4

Hope it helps you

Please mark it as branliest

Answered by Utkarshkesharwani933

1

Answer:

answer is D

Step-by-step explanation:

S1=a= 3n2 + n

3×1 +1

3+1

4

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