7/31/2019 Discriminant Foldable

1/2

> 0 2 real unequal

(different) roots

= 0 1 real root or2 equal roots

< 0 no real roots

If is a perfect square, the roots are rational.If is not a perfect square, the roots are irrational. positive definite negative definite

The Discriminant = b2 4ac

> 0 2 real unequal

(different) roots

= 0 1 real root or

2 equal roots

< 0 no real roots

If is a perfect square, the roots are rational.If is not a perfect square, the roots are irrational. positive definite negative definite

The Discriminant = b2 4ac

7/31/2019 Discriminant Foldable

2/2

!0

!0