Discriminant Flashcards
1
Q
What is the quadratic formula?
A
-b+-[b^2-4ac]
divided by 2a
2
Q
What is the discriminant?
A
b^2 - 4ac
3
Q
How to tell if there’s 2 roots?
A
b^2 - 4ac > 0
4
Q
How to tell if there’s 1 root (repeated)?
A
b^2 - 4ac = 0
5
Q
How to tell if there’s no real roots?
A
b^2 - 4ac < 0
6
Q
If it states it has real roots, what’s the sign?
A
> with line under it
7
Q
If it states it has equal roots, what’s the sign?
A
Literally just = sign
