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Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Discriminants of Quadratic Equations

Excercises on the Discriminants of Quadratic Equations

More on Quadratic equations. It helps to understand this area, too, and it may prove useful at times.

Find the discriminants of the following equations.

1. -x² - 12x + 3 = 0
2. x² + 2x - 4 = 0
3. -5x² - 2x + 9 = 0
4. 3x² + x - 7 = 0
5. -12x² + 5x + 6 = 0
6. -6x² - 11x + 2 = 0
7. x² - 9x + 5 = 0
8. -7x² - 4x + 10 = 0
9. -9x² + 6x - 2 = 0
10. 10x² - 7x - 11 = 0
11. 12x² + x + 5 = 0
12. 2x² - 3x + 1 = 0
13. 11x² + 9x - 6 = 0
14. -10x² + 5x + 7 = 0
15. -5x² - 4x + 12 = 0
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Last edited by Devanté (2006-08-17 05:28:47)

Toast

Real Member

Registered: 2006-10-08

Posts: 1,321

Re: Discriminants of Quadratic Equations

The discriminants of the questions above can be worked out with the aid of:

Where