Question

In an AP if Sn=n^2 +8n then first term??​

Answer 1

Answer:

Step-by-step explanation:

Sn= nsq+2n,let n=1.

Sn=1+2=3.

Now let n=2

Sn=4+4=8

Therefore 8-3=5 is the 2nd term.

A.p=3,5,9.......

A=3,D=4

Tn=a+(n-1)D

Tn=3+(n-1)4

Tn= -1 -4n.

Step-by-step explanation:

hope it's helpful please mark as brainliest answer and thank my answer please