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Surds- equations and inequalities involving surds watch

    • Thread Starter

    Ok I understand everything about surds (yes everything!) But this is 1 thing I dont get.

    I know how to solve an inequality involving a surd but what I get dont is why and how the inequality sign changes?


    in this textbook it goes from

    root3 +5/ 4root3+2 > x

    but then underneath it says

    x< root3 +5/ 4root3+2 * root3 +5/ 4root3-2

    what I dont get is why has the inequality sign just reverseD?

    • PS Helper

    PS Helper
    If a&gt;b then b&lt;a; that's all they've done.

    (Original post by nuodai)
    If a&gt;b then b&lt;a; that's all they've done.
    True - is it wrong that I still remember my primary 3 teacher telling me that the sign is a crocodile which eats the bigger number?
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Updated: September 24, 2010
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