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Ok so to rationalise a fraction which has a surd in its denominator all you have to do is multiply it by the 'whole' equivalent of the fraction for example....
09 June 2011
right..
09 June 2011
x
09 June 2011
then the denominator becomes 2 and the numerator becomes
09 June 2011
i have a GCSE tomorrow as well and don't worry your not the only one who doesn't get surds :S
09 June 2011
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