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Factorise: (5a - 2b)2 - (2a - B)2 - Mathematics

Sum

Factorise:  (5a - 2b)2 - (2a - b)2 

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Solution

(5a - 2b)2 - (2a - b)2 

= (5a - 2b + 2a - b) (5a - 2b - 2a + b)

= (7a - 3b) (3a - b)

Concept: Factorisation by Difference of Two Squares
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (C) | Q 8 | Page 159
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