Sin(x)+sin(2x)+sin(x)*Cos(2x)+sin(2x)*cos(x)=0

Solve for all angles x.

Hello, i was hoping someone could help me with this problem. I am not sure if I use the double angles for sin(2x) and cos(2x). If i do, I am not really sure what to do after that. If someone could help me along with at least the first few steps i would be very appreciative.

Thank you