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Factorise Completely: 625 - X4 - Mathematics

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Sum

Factorise completely: 625 - x4 

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Solution

625 - x4 = (25)2 - (x2)2

= (25 + x2) (25 - x2)

= (25 + x2) [(5)2 - (x)2

= (25 + x2) (5 + x) (5 - x)

Concept: Factorising Completely
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APPEARS IN

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