The inequality is
.
is non negative.
The inequality can be written as
\
Let
.

The zeros of
are at
and
.
Case 1 :
\
.
and
.
and
.
Case 2 :
\
.
and
and
.
The zeros of
are at
and
.
Draw a sign chart by using the values
and
.
Note : The solid circle denote that the value are included in the solution set.
\Observe the sign chart :
\The set of value of
denoted in blue color represents the solution set.
The solutions of
are
values such that
is positive or equal to
.
From the sign chart the solution is
or
.
From the sign chart,the solution set is
.
The solution set of
is
.