Posted by **Bryan Martin** on Thursday, May 21, 2009 at 5:58pm.

Simplify by factoring.

radical 90

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**Damon**, Thursday, May 21, 2009 at 6:51pm
sqrt (9*10) = sqrt (3*3*10) = 3 sqrt (10)

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**annie**, Friday, May 22, 2009 at 12:19am
take factors, beginning with the least common factors.

ex: 90=3,3,10

two 3s (three squared) mean you take a three out, multiplying it by the square root of ten left.

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