Section 5.9
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Holt Example 1
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=6599/6599.xml
Holt Example 2
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7117/7117.xml
Holt Example 3
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7118/7118.xml
Holt Example 4
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7119/7119.xml
Holt Example 5
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7120/7120.xml
Holt Example 6
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7121/7121.xml
Holt Example 7
http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7122/7122.xml