Write the Lowest Rationalising Factor of : √13 + 3 - Mathematics

Write the lowest rationalising factor of : √13 + 3

Sum

( √13 + 3 )( √13 - 3 ) = ( √13 )² - 3² = 13 - 9 = 4

Its lowest rationalizing factor is √13 - 3.

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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 2.7 | Page 21

Write the lowest rationalising factor of √5 - 3.

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