This is from the anime Noir, Episode 1 starting at 23:13 at the school:
[The two characters A and B are leaving the country.]
A: 出国{しゅっこく}の手配{てはい}は済{す}ませた。
'I've made the arrangements to leave the country.'
B: ありがとう。
My question is about the conjugation of 済ませた
. I would have expected to hear: 済まして(い)た
. I can't figure out what kind of conjugation that is. It looks like the potential form with iru
, but I've never seen a past potential form. Plus, 'can finished' or 'can have finished' is much different than 'have finished'. So again, what kind of conjugation is 済ませた
? How is it formed?