SOLUTION: How do you simplify a radical of 45

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Question 604351: How do you simplify a radical of 45
Found 2 solutions by nerdybill, jim_thompson5910:
Answer by nerdybill(7384)   (Show Source): You can put this solution on YOUR website!

factor (using prime numbers):


then, for pull out "pairs":


Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Take advantage of the fact that and 45 = 9*5 to get...










As we can see in the last step above, taking the square root of 9 gives us 3, which is why we factored 45 into 9*5.
So simplifies to

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