chapter 1 - quadratic functions Flashcards
1
Q
what the expression called discriminant ?
A
b² - 4ac
2
Q
what are the three types of roots ?
A
- real and distinct roots
- real and equal (repeated) roots
- no real roots
3
Q
nature of roots when discriminant > 0
A
2 real and distinct roots
4
Q
nature of roots when = 0
A
2 real and equal (repeated) roots
5
Q
nature of roots when discriminant < 0
A
no real roots
