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Factorise: 7b2 - 5b+ 1 - Mathematics

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Sum

factorise: 7b2 - 5b+ 1 

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Solution

7b2 - 5b+ 1 

= 7b2 - 7b - b +1

= 7b(b - 1) - 1(b - 1)

= (b - 1)(7b - 1) 

Concept: Factorisation by Grouping
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (D) | Q 12 | Page 161
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