Question

When we rationalize the denominator of below expression, what's the outcome

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Answer 1

Answer:

The idea of rationalizing a denominator makes a bit more sense if you consider the definition of “rationalize.” Recall that the numbers 5, , and are all known as rational numbers—they can each be expressed as a ratio of two integers (, and respectively). Some radicals are irrational numbers because they cannot be represented as a ratio of two integers. As a result, the point of rationalizing a denominator is to change the expression so that the denominator becomes a rational number.