← Change listRemove Single
THE KNOWLEDGE / REMOVE SINGLE
Self-check.
Recall the fact, reveal the answer, then be honest about whether you knew it.
50facts in
this list
this list
Printable Remove Single reference
Studying as a guest · progress won’t follow you to another device. Create a username from the list page for future rounds.
THE PROMPT
Discriminant and how it determines the number of roots of a quadratic
Answer hidden until you’re ready
0 recalled so far · 0 to retry