4962646
Description
Mind Map by Thomas Marshall, updated more than 1 year ago
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Created by Thomas Marshall
over 8 years ago
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Surds
- √ab=√a X √b
- This means when one is a square number we can get rid of it. For example. √8=√4 X √2.
- √4=2
- Therefore simplified we can make it equal to 2√2
- Therefore simplified we can make it equal to 2√2
- √4=2
- This means when one is a square number we can get rid of it. For example. √8=√4 X √2.
- Rationalise the denominator
- When a surd is on the bottom we rationalise it to get it on the top.
- We do this by X the bottom and top by the surd that is on the bottom.
- This picture is an example of what to do.
- https://www.youtube.com/watch?v=RecR9gV6C1I
- This link is quite good as well
- This link is quite good as well
- https://www.youtube.com/watch?v=RecR9gV6C1I
- This picture is an example of what to do.
- We do this by X the bottom and top by the surd that is on the bottom.
- When a surd is on the bottom we rationalise it to get it on the top.
- What is a Surd?
- A number that cannot be shown as a decimal has it has a
never ending never repeating set of decimals like pie does.
- A number that cannot be shown as a decimal has it has a
never ending never repeating set of decimals like pie does.
- Try this website for some quick practice
- http://www.bbc.co.uk/schools/gcsebitesize/maths/number/surdsrev1.shtml
- http://www.bbc.co.uk/schools/gcsebitesize/maths/number/surdsrev1.shtml
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