Write the Lowest Rationalising Factor of : 3√2 + 2√3 - Mathematics

Write the lowest rationalising factor of : 3√2 + 2√3

Sum

3√2 + 2√3
= ( 3√2 + 2√3 )( 3√2 - 2√3 )
= ( 3√2)² - (2√3)²
= 9 x 2 - 4 x 3
= 18 - 12
= 6
its lowest rationalizing factor is 3√2 - 2√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 2.9 | Page 21

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