Find the solution for the following First Order Differential Equations. Give the particular solution when applicable. BOX your final answer.

1.) 3(3x² + y²)dx 2xydy = 0

2.) (x 2y)dx + (2x + y)dy = 0

3.) yy = (y)²

4.) x y + 3xy = yy y= -2, x=3