3.2n-4.2n-2= কত
A
1
B
2n+1
C
3
D
2n
Correct Answer: 2n+1
3.2n - 4.2n - 2 = 3.2n - 22.2n - 2 = 3.2n - 22 + n - 2 = 3.2n - 2n = 2n(3 - 1) = 2n.2 = 2n + 1