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How do you rationalize a denominator?

In: Math and Arithmetic [Edit categories]

Answer:

5³

First answer by ID3065053627. Last edit by ID3065053627. Question popularity: 1 [recommend question].

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What is rationalize a denominator?
process by which a fraction containing radicals in the denominator is rewritten to have only rational numbers in the denominator.
Why rationalize a denominator?
You rationalize a denominator in a question because having a irrational root makes it harder to work with then a irrational in the numerator. I've never heard anyone question it and it is not hard to...
How do you rationalize denominator surds?
An example may help. If you have the fraction 1 / (2 + root(3)), where root() is the square root function, you multiply top and bottom by (2 - root(3)). If you multiply everything out, you will have...
You can rationalize the denominator using conjugates even when the denominator contains two radical?
Yes. For example, the conjugate of (square root of 2 + square root of 3) is (square root of 2 - square root of 3).
Why do you need to rationalize the denominator?
It is basically a convention for a standardized form.