Dalia,
You need three equations for a unique solution. However, I can see that 2,0,0 is a solution for this.

Dalia S.
asked 09/18/14Phillip R. answered 09/18/14
Top Notch Math and Science Tutoring from Brown Univ Grad
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
Phillip R.
09/18/14