Question

find next four term of series Sn=2n(2n-1)
plzz solve this question fast i will mark you as brainlist

Answer 1

Given ,
Sn= 2n (2n-1)

Put n=1,2,3,4 respectively. Then

S1 = 2 (2-1) = 2
S2= 4 (4-1) = 12
S3= 6 (6-1) = 30
S4= 8 (8-1) = 56

Hence 2,12,30,56 are next four terms.

Answer 2

Answer:

Step-by-step explanation:

Given that,

Sn= 2n (2n-1).......(1)

Then the next four term are-

Sn+1, Sn+2, Sn+3 and Sn+4

put n = n+1 , we get,

Sn+1 = 2(n+1) (2n+2-1) = (2n+2) (2n+1)

similarly put n = n+2 we get,

Sn+2= (2n+4) (2n+3)

similarly put n = n+3 we get,

Sn+3= (2n+6) (2n+5)

and similarly put n = n+4 we get,

Sn+4= (2n+8) (2n+7)