Factorise: X2 - Y2 - 2yz - Z2 - Mathematics

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Sum

factorise:  x2 - y2 - 2yz - z2 

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Solution

x2 - y2 - 2yz - z2 

= x2 - (y2 + 2yz + z2)

= x2 - (y + x)2

= (x - y - z)(x + y + z) 

Concept: Factorisation of Trinomials
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (F) | Q 6.6 | Page 163
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