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Factorise: 15(5x - 4)2 - 10(5x - 4) - Mathematics

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Sum

factorise: 15(5x - 4)2 - 10(5x - 4) 

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Solution

15(5x - 4)2 - 10(5x - 4) 

= 5(5x - 4) [3(5x - 4)2 - 2]

= 5 (5x - 4) [3 (25x2 - 40x + 16) - 2]

= 5(5x - 4) (75x2 - 120x + 46)

Concept: Factorisation by Grouping
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (F) | Q 5.1 | Page 163
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