My daughter (year 10) has come home wanting help with SURD's - she needs to simply 3 x sqrt 6 x sqrt 2

I have never heard of a FURD and can't find a descritption - can anyone help please?

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- Feb 12th 2009, 12:30 AM #1

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- Feb 12th 2009, 12:44 AM #2
First of all it seems you want to say

**Surd**

Read this A-level Mathematics/OCR/C1/Indices and Surds - Wikibooks, collection of open-content textbooks

$\displaystyle

3\times \sqrt{6} \times \sqrt{2}

$

$\displaystyle

=3 \times \sqrt{2\times 3} \times \sqrt{2}

$

$\displaystyle

=6\times \sqrt{3}

$

- Feb 12th 2009, 08:57 AM #3

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- Feb 14th 2009, 10:09 PM #4