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CISCE(English Medium) ICSE Class 9
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Syllabus

Factorise: 1 - 2a - 3a2

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Question

Factorise : 1 - 2a - 3a2

Sum
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Solution

1 - 2a - 3a2 
= 1 - 3a + a - 3a2
=( 1 + a )( 1 - 3a )

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Factorisation of a Quadratic Trinomial by Splitting the Middle Term
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Q 3
Chapter 5: Factorisation - Exercise 5 (B) [Page 71]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 5 Factorisation
Exercise 5 (B) | Q 3 | Page 71
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