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Posted by on Thursday, May 9, 2013 at 10:23pm.

Solve the equation |2x − 5| £ 9

  • Algebra 2 - , Friday, May 10, 2013 at 11:07am

    recall that |n| =
    n if n>=0
    -n if n<0

    So, we have two possibilities.

    If 2x-5 >= 0,
    2x-5 = 9
    x = 7

    If 2x-5 < 0,
    -(2x-5) = 9
    2x-5 = -9
    x = -2

    So, x = -2,7

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