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28 March, 21:55

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

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  1. 28 March, 23:35
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    | 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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