Question

What are rationalising factors

Answer 1

When the denominator of an expression is an irrational which can be reduced to an expression with rational denominator, this process is known as rationalizing the denominator of the irrational number. When the product of two irrational numbers  is a rational number, then each of the two irrational number is called rationalizing factor of the other

Answer 2

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What is rationalising factor?

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If the product of to surds is a rational number then each of them is called rationalizing factor of each other.

The Rationalizing factor is given by:-

$\leadsto \sf{ \sqrt[n]{a} = {a}^{n - \frac{1}{n} } }$