1. Discriminant is 1 ⇒ Two rational roots 9. Discriminant is 4.25 ⇒ Two real roots
2. Discriminant is 0 ⇒ One repeated, rational root 10. Discriminant is 1 ⇒ Two rational roots
3. Discriminant is 60 ⇒ Two real roots 11. Discriminant is 49 ⇒ Two rational roots
4. Discriminant is -39 ⇒ No real roots 12. Discriminant is 0 ⇒ One repeated, rational root
5. Discriminant is 49 ⇒ Two rational roots 13. Discriminant is -36 ⇒ No real roots
6. Discriminant is 225 ⇒ Two rational roots 14. Discriminant is 121 ⇒ Two rational roots
7. Discriminant is -39 ⇒ No real roots 15. Discriminant is 76 ⇒ Two real roots
8. Discriminant is 324 ⇒ Two rational roots 16. Discriminant is100 ⇒ Two rational roots