Write the Lowest Rationalising Factor of : √5 - √2 - Mathematics

Write the lowest rationalising factor of : √5 - √2

Sum

√5 - √2
( √5 - √2 )( √5 + √2 ) = ( √5 )² - ( √2 )² = 3

Therefore lowest rationalizing factor is √5 + √2

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Rationalisation of Surds

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Chapter 1: Rational and Irrational Numbers - Exercise 1 (C) [Page 21]

Chapter 1 Rational and Irrational Numbers
Exercise 1 (C) | Q 2.6 | Page 21

Write the simplest form of rationalising factor for the given surd.

`sqrt 32`

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