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Thread: gre question

  1. #1
    Senior Member sfspitfire23's Avatar
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    gre question

    Column A:
    $\displaystyle \sqrt{x^4-12x^2+36$

    Column B:

    $\displaystyle x^2-6$

    Which is larger/are the even/not enough info

    I would square each side and I see that both sides are equal.
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  2. #2
    MHF Contributor

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    $\displaystyle \sqrt{x^4-12x^2+36}=|x^2-6|$
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