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March 25, 2017

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Solve the inequlity x^2>16 and give the answer in interval notation.

  • algebra - ,

    x^2>16
    <=>
    ±x>4
    <=>
    +x>4 or -x>4
    <=>
    x∈(4,∞) or x∈(-∞-4)
    <=>
    x∈ (-∞,-4)∪(4,∞)

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