Question 7 (i) - Algebra Identities - Identity III - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 13, 2026 by

Ex 9.5, 7 - Using a^2 - b^2 = (a + b) (a - b), find (i) 51^2 - 49^2

 

 

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Question 7 Using 𝑎^2−𝑏^2=(𝑎+𝑏)(𝑎−𝑏) , find (i) 〖51〗^2−〖49〗^2 〖51〗^2−〖49〗^2 𝑎^2−𝑏^2=(𝑎+𝑏)(𝑎−𝑏) Putting 𝑎 = 51 & 𝑏 = 49 = (51+49)×(51−49) = 100×2 = 𝟐𝟎𝟎

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