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    • Thread Starter

    i need to expand

    1-x/1+2x (all square rooted)...(could someone write that in latex because im trying to nad i cant )

    in powers of x up to and including the x^2 term. and give the values of x for which the full series converges.

    not too sure how to start this question off

     \sqrt{ \frac{1-x}{1+2x}}
    Binomial theorem. Easiest way would be to get this into another form, for example  (1-x)^\frac{1}{2}(1+2x)^-^\frac {1}{2}
    Though I have messed up a similair question before so that may not be 100% right.
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Updated: November 13, 2008
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