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

5. Exact Equations: Solve the equation * (2 Points) 3x (xy - 2) dx + (x3 + 2y) dy = 0 O xy' - 3x- + y- = c Oxy - 3x2 + y? = c 6. Exact Equations: Solve the equation * (2 Points) (1 - xy) ' dx + [ y2 + x2 ( 1 - xy) -2 ] dy = 0; when x O xty - y + 5 xy - 3x3 = 5 O - y' + 5xy - 3x = 57. Linear Equation of Order 1: Solve the equation * (2 Points) 2 (y - 4x2 ) dx + xdy = 0 Ox- ty = 2x+ + c O x ty= = 2x4 + c 8. Linear Equation of Order 1: Solve the equation * (2 Points) (2x + 3) y' = y + (2x + 3) 2; whenx = -1, y= 0 2y = (2x + 3) ? In(2x + 3) O y? = (2x + 3) In(2x + 3)