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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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