How do you kill trolls on Skyrim?

Depending on your level, there are various ways to kill a troll. In the early stages of the game, it is best to try and avoid these dangerous creatures. If you find one you simply cannot bypass, try equipping your flames spell in one hand and a one-hand weapon in the other. The fire will help combat the regenerative effects. You can also use the fire breath shout if you have it. If you still cannot kill the monster, try and lower your combat difficulty in the settings menu.