if the sum of n terms of an ap is sn =3n2+5n write its nth term
Answers
Answered by
0
Step-by-step explanation:
3n2+5=
3n2+5n
n(3n+5)=
n(3n+5)
Answered by
2
Answer:
Sn =
therefore
a1 =
= 8
a2=
= 22-8= 14
therefore , d = 14-8 = 6
therefore , n = 8+ (n-1)d
=8+(n-1)6=6n-6+8 = 6n-2
hope it helped you dear...
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