Question

prove that 3 power n + 3 power n-1 / 3 power n+1 - 3 power n = 2/3

Answer 1

Step-by-step explanation:

My friend I have written in short write in copy and you can understand it clearly and here 3n means 3^n

3n+3(n-1)/3n+1-3n

3n(1+3^-1)/3n(3-1)

=4/3/2=4/6=2/3

proved