I study ODEs from Tenenbaum and Pollard textbook and come to this problem in exercise 10 on integrating factors .

$ydx-(y^{2}+x^{2}+x)dy=0$

I tried to check the condition of these integrating factors 

$h(x) \: ,h(y) \: ,h(xy) \: ,h(x/y) \: ,h(y/x)$ , but all failed