Factorise: X2 + 5xy + 4y2 - Mathematics

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Sum

factorise: x2 + 5xy + 4y2 

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Solution

x2 + 5xy + 4y2 

= x2 + 4xy + xy + 4y2

= x(x + 4y) + y (x + 4y)

= (x + 4y)(x + y)

Concept: Factorisation by Grouping
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Chapter 13: Factorisation - Exercise 13 (D) [Page 161]

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (D) | Q 6 | Page 161
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