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Math Help - confused....

  1. #1
    Newbie n_duncan2010's Avatar
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    confused....

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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by n_duncan2010 View Post
    7. (2+sqrt(6))(2-sqrt(6)) = 4 - 6 = -2.

    2*sqrt(3)*sqrt(12) = sqrt(3)*sqrt(3*4) = sqrt(3)*sqrt(3)*2 = 3*2 = 6

    So column B is the greater

    The others are similar to column B in this question, the numbers under
    the root signs are reduced to their prime factorisations, the factors that
    appear twice are brought out from under the root sign, and whatever can
    be cancelled is cancelled.

    RonL
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