Monday, December 16, 2019

SURDS

Surds

When we can't simplify a number to remove a square root (or cube root etc) then it is a surd.
Example: √2 (square root of 2) can't be simplified further so it is a surd
Example: √4 (square root of 4) can be simplified (to 2), so it is not a surd!
Have a look at some more examples:
NumberSimplifiedAs a DecimalSurd or
not?
221.4142135...(etc)Surd
331.7320508...(etc)Surd
422Not a surd
¼½0.5Not a surd
3113112.2239800...(etc)Surd
32733Not a surd
53531.2457309...(etc)Surd
The surds have a decimal which goes on forever without repeating, and are Irrational Numbers.

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