Question

if the nth term of an ap is 3+4n then find the common difference.

Answer 1

this is your answer . (20 characters)

Answer 2

an= 3+4n
a1= 3+4×1= 7
a2=3+4×2=11
a3=3+4×3=15
common difference = a2-a1= 11-7=4