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Factorise : 9a (X-2y)4 - 12a (X - 2y)3 - Mathematics

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Sum

factorise :   9a (x-2y)4 - 12a (x - 2y)3 

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Solution

9a (x-2y)4 - 12a (x - 2y)3

= 3a (x - 2y)3 [3(x - 2y) - 4]

=3a(x - 2y)3 [3x -6y - 4] 

Concept: Factorisation by Taking Out Common Factors
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (F) | Q 1.5 | Page 163
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