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Dividing Radicals and Rationalizing the Denominator - Problem 5
If you see that you are being asked to work with a square root of a perfect square, by all means use the square root to get rid of the radical sign. Here we see fractions that have perfect square numbers to begin with, and fractions that can be reduced to have perfect squares. Regarding the variables, it is often easier to reduce the variables in the fraction before taking any roots.
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