I don't know how to find the Ax^2...Please Help.
What Nacho said to do is probably how I'd go about it (especially because some of the other posts are incorrect). BUT, if you have to use partial fractions, then let:
Multiplying through by gives you .
Set and it follows that .
The first integral is simply , which if you note, is the same answer Nacho got using his method.
The second integral is .