Posted by **Hayley** on Wednesday, March 21, 2012 at 7:51pm.

3x^2-x-16=0

Use the quadratic formula to solve this.

- Quadratic Formula -
**DrBob222**, Wednesday, March 21, 2012 at 7:54pm
Do you know the quadratic formula? If so substitute the variables and solve. Otherwise, tell us what your prblem is.

- Quadratic Formula -
**Hayley**, Wednesday, March 21, 2012 at 7:55pm
I know the format is supposed to be ax^2+bx+c. But Idk what to do about this equation since there are - signs instead.

- Quadratic Formula -
**DrBob222**, Wednesday, March 21, 2012 at 8:24pm
a is +3

b is -1

c is -16

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