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Factorise the following: (a + 8)2 – (b + 5)2 - Mathematics

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Question

Factorise the following:

(a + 8)2 – (b + 5)2

Sum
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Solution

Given (a + 8)2 – (b + 5)2

We know that,

(a + b) (a – b) = a2 – b2

Hence,

⇒ (a + 8 + b + 5) (a + 8 – b – 5)

⇒ (a + b + 13) (a – b + 3)

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Chapter 4: Factorisation - EXERCISE 4B [Page 43]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 4 Factorisation
EXERCISE 4B | Q IV. 1. | Page 43
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