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Factorise Completely: X2 - Y2 - 3x - 3y - Mathematics

Sum

Factorise completely: x2 - y2 - 3x - 3y 

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Solution

x2 - y2 - 3x - 3y = (x2 - y2) - 3 (x + y)

= (x + y) (x - y) - 3(x + y)

= (x + y)(x - y -3)

Concept: Factorising Completely
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 13 Factorisation
Exercise 13 (E) | Q 9 | Page 162
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