Quadratics Flashcards
1
Q
What is the quadratic formula?
A
(-b+-sqrt(b^2-4ac))/2a
2
Q
What is the discriminant?
A
b^2-4ac
3
Q
What is the discriminant used for?
A
It is used to tell us the number of real solutions in an equation
4
Q
How do you know when there are two real roots?
A
When the discriminant is > 0
5
Q
How do you know when there is one real root?
A
When the discriminant is = 0
6
Q
How do you know when there are no real roots?
A
When the discriminant is < 0
