Does this series converge absolutely or conditionally:

Problem (1): how do I even apply the alternating test when the demoninator is ?

Problem (2): lets assume we figured out problem (1) which test would I use afterward to see if it converges absolutely?

Does this series converge absolutely or conditionally:

Soultion (1): Ok this time, the series does converge by alternating series test...

Problem (2): Which test do I use to see if it converges absolutely? I tried using comparision test:

converges (p-series with p>1) but this has no conclusion on whether converges or not.

How do I solve these question?!? Any help appreciated!