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Ex 9.5, 3 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 2

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Ex 9.5, 3 Find the following squares by using the identities. (ii) (π‘₯𝑦+3𝑧)^2 (π‘₯𝑦+3𝑧)^2 (π‘Ž+𝑏)^2=π‘Ž^2+𝑏^2+2π‘Žπ‘ Putting π‘Ž = π‘₯𝑦 & 𝑏 = 3𝑧 = (π‘₯𝑦)^2+(3𝑧)^2+2(π‘₯𝑦)(3𝑧) = (π‘₯^2×𝑦^2 )+(3^2×𝑧^2 )+(2Γ—3)Γ—(π‘₯×𝑦×𝑧) = 𝒙^𝟐 π’š^𝟐+πŸ—π’›^𝟐+πŸ”π’™π’šπ’›

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.