recall then first series converges absolutely by direct comparison test by the geometric series.
as for the second one, try Leibniz test.
The first one is pretty easy.
You've got:
and it is divergent. If it was 0 the test would've been inconclusive. (limit test)
For the second one:
you can see that
and it is decreasing (by drawing the graphic of the function .
We can conclude that it is alternating series which converge.
Regards.