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

Transcript

Example 11 Using the Identity (I), find (i) (2π‘₯+3𝑦)^2 (2π‘₯+3𝑦)^2 (π‘Ž+𝑏)^2=π‘Ž^2+𝑏^2+2π‘Žπ‘ Putting π‘Ž = 2π‘₯ & 𝑏 = 3𝑦 (π‘Ž+𝑏)^2=π‘Ž^2+𝑏^2+2π‘Žπ‘ Putting π‘Ž = 2π‘₯ & 𝑏 = 3𝑦 Example 11 Using the Identity (I), find (ii) γ€–103γ€—^2 (100+3)^2 (π‘Ž+𝑏)^2=π‘Ž^2+𝑏^2+2π‘Žπ‘ Putting π‘Ž = 100 & 𝑏 = 3 = (100)^2+(3)^2+2(100)(3) = 10000+9+600 = πŸπŸŽπŸ”πŸŽπŸ—

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.