Posted by
Bryan Martin on
.
Simplify by factoring.
radical 90

Math 
Damon,
sqrt (9*10) = sqrt (3*3*10) = 3 sqrt (10)

Math 
annie,
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.