Surds

Description

A very quick overview of surds with some links to help.
Thomas Marshall
Mind Map by Thomas Marshall, updated more than 1 year ago
Thomas Marshall
Created by Thomas Marshall about 8 years ago
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Resource summary

Surds
  1. √ab=√a X √b
    1. This means when one is a square number we can get rid of it. For example. √8=√4 X √2.
      1. √4=2
        1. Therefore simplified we can make it equal to 2√2
    2. Rationalise the denominator
      1. When a surd is on the bottom we rationalise it to get it on the top.
        1. We do this by X the bottom and top by the surd that is on the bottom.
          1. This picture is an example of what to do.
            1. https://www.youtube.com/watch?v=RecR9gV6C1I
              1. This link is quite good as well
      2. What is a Surd?
        1. A number that cannot be shown as a decimal has it has a never ending never repeating set of decimals like pie does.
        2. Try this website for some quick practice
          1. http://www.bbc.co.uk/schools/gcsebitesize/maths/number/surdsrev1.shtml
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