Ex 8.1, 1 Add the following. (iv) 𝑙^2 〖+ 𝑚〗^2, 𝑚^2 〖+ 𝑛〗^2, 𝑛^2 〖+ 𝑙〗^2, 2𝑙𝑚 + 2𝑚𝑛 + 2𝑛𝑙Expressions are 𝑙^2 〖+ 𝑚〗^2, 𝑚^2 〖+ 𝑛〗^2, 𝑛^2 〖+ 𝑙〗^2, 2𝑙𝑚 + 2𝑚𝑛 + 2𝑛𝑙 We put like terms below like terms ∴ Required sum = 2𝑙^2+2𝑚^2+2𝑛^2+2𝑙𝑚+2𝑚𝑛+2𝑛𝑙 = 𝟐(𝒍^𝟐+𝒎^𝟐+𝒏^𝟐+𝒍𝒎+𝒎𝒏+𝒏𝒍)

Next: Ex 8.1, 2 (a) → Ask a doubt

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Davneet Singh

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.

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