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Discriminants

For each quadratic equation, use the discriminant to determine the number and type of roots.

General Questions


y = x² + 6x + 9
1. 





y = 3x² + 4x
2. 





y = x2 + 3x +5
3. 





y = 2x2 + 9x + 5
4. 





y = 5x2 + 10x + 5
5. 





y = 5x² + 7x + 9
6. 





y = 7x² +12x + 4
7. 





y = 2x² + 9x + 7 
8. 





y = 3x² +8x +5/3
9. 





y = 8x² +10x +2
10. 





y = 5x² +6x +7
11. 





y = x² +10x + 2
12. 








J Epstein

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