Where am I going wrong here?!?

Find the general solution of the following equation;

i.e.

So, my working.

Using the whole (ry)' = ry' + r'y = r(y' + py) = rf thing where p = 2/x and f = x^2...

=>

=>

So

=>

=>

=>

The answer given in the tutorial is (no working given) and I have no idea how to get that though I figure the problem lies with the log bit... Any help?