Ex 9.5, 3 - Find the squares by using identities (i) (b - 7)^2

 

 

 

 

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

Transcript

Ex 9.5, 3 Find the following squares by using the identities. (i) (π‘βˆ’7)^2 (π‘βˆ’7)^2 (π‘₯βˆ’π‘¦)^2=π‘₯^2+𝑦^2βˆ’2π‘₯𝑦 Putting π‘₯ = 𝑏 & 𝑦 = 7 = (𝑏)^2+(7)^2βˆ’2(𝑏)(7) = 𝑏^2+49βˆ’(2Γ—7)×𝑏 = 𝒃^𝟐+πŸ’πŸ—βˆ’πŸπŸ’π’ƒ

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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.