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Ex 12.2, 3 Factorise the expressions. (iv) ใ€–๐‘Ž๐‘šใ€—^2 + ใ€–๐‘๐‘šใ€—^2 + ใ€–๐‘๐‘›ใ€—^2 + ใ€–๐‘Ž๐‘›ใ€—^2ใ€–๐‘Ž๐‘šใ€—^2 + ใ€–๐‘๐‘šใ€—^2 + ใ€–๐‘Ž๐‘›ใ€—^2 + ใ€–๐‘๐‘›ใ€—^2 = (ใ€–๐‘Ž๐‘šใ€—^2 + ใ€–๐‘๐‘šใ€—^2) + (ใ€–๐‘Ž๐‘›ใ€—^2 + ใ€–๐‘๐‘›ใ€—^2) = ๐‘š^2 (๐‘Ž+๐‘)+๐‘›^2 (๐‘Ž+๐‘) Taking (a + b) common, = (a + b) (๐’Ž^๐Ÿ + ๐’^๐Ÿ) Both have ๐‘š^2 as common factor Both have ๐‘›^2 as common factor

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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 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.