I know I can look at unanswered questions, but a few times I have wondered about answered questions.
If you enter nothing in the search box and just press Enter you'll see a link to the right of the search button. This will tell you how to do advance filtering options from tags, to scores, views and etc.
To filter for all questions that have at least one answer.
[search term] answers:1
To filter for all questions that have an accepted answer.
[search term] hasaccepted:yes
As Aarthi♦ said you can also access the page directly.
You can also access that page directly from: raspberrypi.stackexchange.com/search