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Find the Following Squares by Suing the Identities. (B − 7)Square2 - Mathematics

Find the following squares by suing the identities.

(b − 7)2

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Solution

(b − 7)2 = (b)2 − 2(b) (7) + (7)2 [(a − b)2 = a2 − 2ab + b2]

= b2 − 14b + 49

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APPEARS IN

NCERT Class 8 Maths Textbook
Chapter 9 Algebraic Expressions and Identities
Exercise 9.5 | Q 3.1 | Page 151
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