The limits of the integrals give you the boundary curves. If you draw the limits you can see that there is a region defined by y=x^2 and y=x+2, the limits on the other integral tell you the values of x for which x^2=x+2, so the boundary curves are y=x^2 and y=x+2
Hi
Have a look to this post :
http://www.mathhelpforum.com/math-he...integrals.html
The sketch has disappeared, here it is :