I'm doing maths for computer science at uni after not having done maths for 2 years (since GCSE), so I'm having some troubles... I've been set a bunch of homework q's about logs and exps, and I can do all the solving ones and most of the simplification ones. Except for these two:

Simplify:

(this one looks simple to me already haha! I have no idea where to go with it)

and

Sorry, the answers are probably blatently obvious to anyone with half a brain but I'm just not sure what to do... arghh