Respuesta :

4-1/n^3

I hope this helps. 

Have a "AWESOME" day. :)
catalinacastil1

Answer:

Step-by-step explanation:

3n^-n over n^2-1 * n^2 over n+1

Nx(3n-1) over (n-1) x (n+1) * N+1 over N^2

3N-1 over Nx(n-1) += 3 n-1 over n^-n

Hope this helps