1. The problem statement, all variables and given/known data X'=x-y^2 Y'=x^2 -xy -2x 2. Relevant equations Find the critical point of this system. 3. The attempt at a solution I know one point is (0,0). When I tried it I got sqrt(x)= 2 and sqrt(x)= 1 but the point (1,1) doesn't fit later parts of the question. I'm also aware that since a sqrt can have positive and negative values then (4, -2) can also equal zero. Am I missing something obvious?