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Write a Pair of Irrational Numbers Whose Product is Irrational. - Mathematics

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Question

Write a pair of irrational numbers whose product is irrational.

Sum
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Solution

Consider two irrational numbers ( 5 + √2 ) and ( √5 - 2 )
Thus, the product, ( 5 + √2 ) x ( √5 - 2 ) = 5√5 - 10 + √10 - 2√2 is irrational. 

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Chapter 1: Rational and Irrational Numbers - Exercise 1 (B) [Page 14]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
Exercise 1 (B) | Q 11 | Page 14
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