mkwwaigand mkwwaigand

14-09-2016
Mathematics

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Solve and graph the absolute value inequality: |2x + 4| > 8.

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texaschic101 texaschic101

14-09-2016

| 2x + 4 | > 8

2x + 4 > 8
2x > 8 - 4
2x > 4
x > 4/2
x > 2

-(2x + 4) > 8
-2x - 4 > 8
-2x > 8 + 4
-2x > 12
x < 12/-2
x < -6

open circle on 2, shaded to the right : open circle on -6, shaded to the left

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