please answer the following, and choose the correct answer in the multiple choices:

3. Homogeneous: Solve the equations * (2 Points) xydx + (x2 + y? ) dy = 0 Out ( 212 + 1 ) = C O yz ( 27 + 1 ) = 0 4. Homogeneous: Solve the equations * (2 Points) (x - y) dx + (3x + y) dy = 0; when x = 3 , y = -2 O 2 (2x + 3y) + (x + y) In(x+ y) = O 2x ( 2 + 3y) + ( x + y) In(x+ y) =