CalcIII extreme values and saddle points

[chronie]

Homework Statement

http://img121.imageshack.us/img121/4601/54510849.png

The Attempt at a Solution

I separated the partial derivatives. However I do not know how to solve a linear function with a raised power. I know that I will have to solve for (0,0) and another answer. Yet, I just do not know how to solve for that power. Technically I can graph the functions but I cannot use a calculator in my clac class. If anyone can help me out that would be great.

 

[Dick]

I would solve the Fx equation for y and then substitute the y value into the Fy equation, and vice versa.

 

[chronie]

oh I totally forgot about substitution. Thank you!