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Indices, SMB-032

Rationalise the denominator of the surd fraction  `(sqrt(12))/(sqrt(6)-2)`.   (3 marks)

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`3sqrt(2)+2sqrt(3)`

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`(sqrt(12))/(sqrt(6)-2)` `=(2sqrt(3))/(sqrt(6)-2) xx (sqrt(6)+2)/(sqrt(6)+2)`  
  `=(2sqrt(3)(sqrt(6)+2))/((sqrt(6))^2-2^2)`  
  `=(2sqrt(18)+4sqrt(3))/(2)`  
  `=(6sqrt(2)+4sqrt(3))/(2)`  
  `=3sqrt(2)+2sqrt(3)`  

Filed Under: Indices Tagged With: num-title-ct-extension, smc-4228-75-Surd denominators

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