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CISCE(English Medium) ICSE Class 9
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Syllabus

Find the Square of : 3 + 2√5 - Mathematics

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Question

Find the square of : 3 + 2√5

Sum
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Solution

( 3 + 2√5 )2 = 32 + 2( 3 )( 2√5) + ( 2√5 )2
= 9 + 12√5 + 20
= 29 + 12√5

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Q 2.4
Chapter 1: Rational and Irrational Numbers - Exercise 1 (B) [Page 13]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
Exercise 1 (B) | Q 2.4 | Page 13
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