Surds

A surd is a square root which cannot be reduced to a whole number. For example, square root of 4 = 2 is not a surd, as the answer is a whole number. But square root of 5 is not a whole number. You could use a calculator to find that square root of 5 = 2.236067977 but instead of this we often leave our answers in the square root form, as a surd.

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  • Created by: Leon
  • Created on: 02-02-11 15:36

Simplify

square root of 12 (http://www.bbc.co.uk/schools/gcsebitesize/maths/images/surdsrev2_6.png)

square root of 12 (http://www.bbc.co.uk/schools/gcsebitesize/maths/images/surdsrev2_6.png)= square root of 4 x square root of 3 (http://www.bbc.co.uk/schools/gcsebitesize/maths/images/surdsrev2_7.png)2 square root of 3 (http://www.bbc.co.uk/schools/gcsebitesize/maths/images/surdsrev2_8.png)

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