For test point x = –2, the inequality is true.
For test point x = 0, the inequality is false.
For test point
, the inequality is true.
For test point x = 2, the inequality is false.
Solution:
Given expression is the inequality.

Substitute x = –2 in the inequality.


< 0
For test point x = –2, the inequality is true.
Substitute x = 0 in the inequality.


> 0
For test point x = 0, the inequality is false.
Substitute
in the inequality.


< 0
For test point
, the inequality is true.
Substitute x = 2 in the inequality.


> 0
For test point x = 2, the inequality is false.
Hence,
For test point x = –2, the inequality is true.
For test point x = 0, the inequality is false.
For test point
, the inequality is true.
For test point x = 2, the inequality is false.