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    sasha195's Avatar
    sasha195 Posts: 1, Reputation: 1
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    #1

    Sep 25, 2008, 04:23 PM
    Radical expression (adding and subtracting)
    √99+√63-√144=
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 26, 2008, 03:45 AM

    You can do them in a calculator, each one, and do the remaining calculations... or you mean simplifying? Then here we go!



    divide by a square number you know, 9. The square root of 9 is 3. ok:





    Same thing:


    and



    is 12, giving;



    Then you can further simplify,

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