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Math Help - Trinomial Surds

  1. #1
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    Trinomial Surds

    How to rationalise trinomial surds?
    Such as 1/ root(2) + root(3) + root (5).

    Thanks.
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  2. #2
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    Quote Originally Posted by anonymous_maths View Post
    How to rationalise trinomial surds?
    Such as 1/ root(2) + root(3) + root (5).

    Thanks.
    \dfrac1{(\sqrt{2}+\sqrt{3})+\sqrt{5}} \cdot \dfrac{(\sqrt{2}+\sqrt{3})-\sqrt{5}}{(\sqrt{2}+\sqrt{3})-\sqrt{5}} = \dfrac{\sqrt{2}+\sqrt{3}-\sqrt{5}}{2\sqrt{6}}

    Can you take it from here?
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  3. #3
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    Thanks

    Yes, I get do the rest now, thank you very much!
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