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PAGE: 145 | SET: Exercises | PROBLEM: 1 |

The function is .
Let .
Therefore has
real zeros at
and
.
Create a sign chart using these values.
Note : The solid circles denote that the values are included in the solution set.
Observe the sign chart :
The set of values of denoted in pink color represents the solution set.
Determine whether is positive or negative on the test intervals.
Test intervals are and
.
If , then
.
If , then
.
If , then
.
The solutions of are
values for which
is negative or equal to
.
The solution is .
The solution set of is
.

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