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March 26, 2017

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Solve the inequality //(2x-1)(x+3)/-4/< 1
where /x/ is the modulus of x.

  • maths - ,

    why not just use ||, since / is usually used for division?

    ||(2x-1)(x+3)|-4| < 1
    You have four cases to consider:
    |(2x-1)(x+3)|-4 positive or negative, and within those,
    (2x-1)(x+3) positive or negative

    you will quite possibly end up with a solution set comprising 4 intervals

  • maths - ,

    still cant solve it.....

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