Factorise : X2 - (B - 2)X - 2b - Mathematics

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Sum

Factorise : x2 - (b - 2)x - 2b 

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Solution

x2 - (b - 2)x - 2b 

= x2 - bx + 2x - 2b

= x (x - b) + 2(x - b)

= (x - b) (x + 2) 

Concept: Factorisation by Grouping
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (B) | Q 12 | Page 158
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