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Evaluate : (A+1) (A-1) (A2+1) - Mathematics

Sum

Evaluate : (a+1) (a-1) (a2+1)

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Solution

(a+1) (a-1) (a2+1)

= [(a)2−(1)2] (a2+1)

= (a2−1) (a2+1)

= (a2)2 − (1)2

= a4 − 1

Concept: Product of Sum and Difference of Two Terms
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (A) | Q 3.1 | Page 150
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