Part 1: Solve the homogeneous equation
The differential operator for the homogeneous equation is
List the complementary functions (the functions that make up the complementary solution) . When you get this answer correct it will give you the format for the complementary solution that you must use below.

Part 2: Find the particular solution
To solve the non-homogeneous differential equation, we look for functions annihilated by the differential operator (a multiple of the operator given above)
Therefore the particular solution must be made up of the functions
Substituting these into the differential equation, we find the particular solution is

Part 3: Solve the non-homogeneous equation
has general solution (remember to use the format I gave you in your correct answer to the complementary functions above)

Now that we have the general solution solve the IVP