Stuck on a D.E. Quiz Problem: Help Appreciated!

[Hyrox]

I'm reviewing for a D.E. quiz, and I came across this problem.

Solve the IVP y'=1+x+y+xy, y(0)=0

I feel as if it's terribly simple and my brain is simply not clicking. Any help would be appreciated.

 

[l'Hôpital]

Hint:
y' = 1 + x + y + xy = (1 + x) + (1 + x)y