Factorise: (5a - 3b)2 - 16b2 - Mathematics

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Sum

Factorise: (5a - 3b)2 - 16b2  

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Solution

(5a - 3b)2 - 16b2  

= (5a - 3b)2 - (4b)2  

= (5a - 3b + 4b) (5a - 3b - 4b)

= (5a + b) (5a - 7b)

Concept: Factorisation by Difference of Two Squares
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Chapter 13: Factorisation - Exercise 13 (C) [Page 159]

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (C) | Q 6 | Page 159
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