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Factorise Pfour4 − 81 - Mathematics

Factorise p4 − 81

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Solution

p4 − 81 = (p2)2 − (9)2

= (p2 − 9) (p2 + 9)

= [(p)2 − (3)2] (p2 + 9)

= (p − 3) (p + 3) (p2 + 9)

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APPEARS IN

NCERT Class 8 Maths Textbook
Chapter 14 Factorisation
Exercise 14.2 | Q 4.2 | Page 224
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