Question 1 (iii) - Algebra Identities and Formulas - Chapter 8 Class 8 Algebraic Expressions and Identities

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Ex 9.5, 1 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 3

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Question 1 Use a suitable identity to get each of the following products. (iii) (2𝑎 – 7) (2𝑎 – 7) (2𝑎−7) (2𝑎−7) = (2𝑎−7)^2 = (2𝑎)^2+(7)^2−2(2𝑎) (7) = (2^2×𝑎^2 )+49−(2×2×7)×𝑎 = 𝟒𝒂^𝟐+𝟒𝟗−𝟐𝟖𝒂

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo