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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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Transcript

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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.