iPhoto on the iPad and on your Mac ar completely different programs. They do not sync in both directions.
If i edit a photo on iphoto on my ipad and then conect it to my laptop will it
save the changes i made the photos on the ipad or will it revert them to
the original version which is the verion they are on the macbook pro?
When you upload photos to your iPad bysyncing albums and events to it using iTunes, and then edit some photos, and connect the iPad again and sync again, then the synced albums will be replaced on the iPad by the new set of albums. The changes will not sync back to iPhoto on your Mac.
If you want the edited image to appear on your mac, savea new copy to the camera roll and then connect the iPad to your Mac. Import selected photos from the camera rolll to iPhoto.
Regards
Léonie