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

  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) (1.1π‘šβˆ’0.4) (1.1π‘š+0.4) (1.1π‘šβˆ’0.4) (1.1π‘š+0.4) = (1.1π‘š)^2βˆ’ (0.4)^2 = (γ€–1.1γ€—^2Γ—π‘š^2 )βˆ’γ€–0.4γ€—^2 = (11/10)^2 π‘š^2 βˆ’(4/10)^2 = 121/100 π‘š^2 βˆ’16/100 = 𝟏.πŸπŸπ’Ž^𝟐 βˆ’πŸŽ.πŸπ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.