Posted by Bryan Martin on Thursday, May 21, 2009 at 5:58pm.
Simplify by factoring.
radical 90

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

Math  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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