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That is called "rationalizing the denominator". It consists of multiplying the numerator and the denominator by specific terms, which include square roots. Examples:* If the denominator is root(2) (that is, the square root of 2), multiply numerator and denominator by root(2).

* If the denominator is root(2) + root(3), multiply numerator and denominator by root(2) - root(3).

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Q: A method used to eliminate radicals from the denominator of a fraction?
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