how do you do this? 2nd person, future perfect, plural of augeo, augere, auxi, auctus?

Answer 1

Go back into that link I gave you before (when you were pretending to be lalalalala!).

Scroll down to Verbs and then Second conjugation. The verb augeo is like habeo, habere. There should be a long mark over the e's in augeo, augere, habeo, habere. That's how you know they are in the second conjugation.

Check out this website, too:
http://www.informalmusic.com/latinsoc/verbs/