Ex 9.5, 1 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 5

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  1. Chapter 9 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

Transcript

Ex 9.5, 1 Use a suitable identity to get each of the following products. (v) (1.1๐‘šโˆ’0.4) (1.1๐‘š+0.4) (1.1๐‘šโˆ’0.4) (1.1๐‘š+0.4) = (1.1๐‘š)^2โˆ’ (0.4)^2 = (ใ€–1.1ใ€—^2ร—๐‘š^2 )โˆ’ใ€–0.4ใ€—^2 = (11/10)^2 ๐‘š^2 โˆ’(4/10)^2 = 121/100 ๐‘š^2 โˆ’16/100 = ๐Ÿ.๐Ÿ๐Ÿ๐’Ž^๐Ÿ โˆ’๐ŸŽ.๐Ÿ๐Ÿ”

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.