Ex 9.5, 3 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 6

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  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. (vi) (2π‘₯𝑦+5𝑦)^2 (2π‘₯𝑦+5𝑦)^2 (π‘Ž+𝑏)^2=π‘Ž^2+𝑏^2+2π‘Žπ‘ Putting π‘Ž = 2π‘₯𝑦 & 𝑏 = 5𝑦 = (2π‘₯𝑦)^2+(5𝑦)^2+2(2π‘₯𝑦)(5𝑦) = (2^2Γ—π‘₯^2×𝑦^2 )+(5^2×𝑦^2 )+(2Γ—2Γ—5)Γ—π‘₯Γ—(𝑦×𝑦) = πŸ’π’™^𝟐 π’š^𝟐+πŸπŸ“π’š^𝟐+πŸπŸŽπ’™π’š^𝟐

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Davneet Singh
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.