Question

If Sn of an A.P. is 2n²-3 then find the common difference of the A.P.
A. -1
B. 8
C. 6
D. 7​

Answer 1

Answer:

c . 6

Step-by-step explanation:

Sn= 2n^2-3

so

X1 = (2*1^2)-3

= 2-3 = -1

X2 = (2*2^2)-3

= 8-3 = 5

common difference = 5-(-1)

=5+1 = 6