Math, asked by manav110, 1 year ago

if the sum of n term of an ap is 3n square-n and its common difference is 6 then its first term is

Answers

Answered by Vinayak333
10
Sn=3n²-n
S1=3(1)²-1
S1=3×1-1
S1=3-1
S1=2
Also S1 is equal to first term
So, The first term is 2
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