\
Step 1 :
\The differential equation is 
Consider
.
The auxiliary equation is
.
Find the roots of the auxiliary equation.
\
The roots of the auxiliary equation
.
The complementary solution is 
Step 2 :
\Find the particular solution.
\The particular solution is of the form
.
Apply derivative on each side with respect to x.
\
Apply derivative on each side with respect to x.
\
Substitute
and
in equation (1).

The particular solution is
.
The general solution is
.
Solution :
\The general solution is
.