Ex 14.2, 1 (iv) - Factorise 49y^2 + 84yz + 36z^2 - Ex 14.2

  1. Chapter 14 Class 8 Factorisation
  2. Serial order wise

Transcript

Ex 14.2, 1 Factorise the following expressions. (iv) 49๐‘ฆ^2 + 84yz + 36๐‘ง^2 49๐‘ฆ^2 + 84yz + 36๐‘ง^2 = ใ€–(7๐‘ฆ)ใ€—^2+84๐‘ฆ๐‘ง+ใ€–(6๐‘ง)ใ€—^2 = ใ€–(7๐‘ฆ)ใ€—^2+ 2ร—7๐‘ฆร—6๐‘ง+ใ€–(6๐‘ง)ใ€—^2 = ใ€–(7๐‘ฆ)ใ€—^2+ ใ€–(6๐‘ง)ใ€—^2+ 2ร—7๐‘ฆร—6๐‘ง Using (๐‘Ž+๐‘^2 )=๐‘Ž^2+๐‘^2+2๐‘Ž๐‘ Here, ๐‘Ž = 7y and b = 6z = ใ€–(๐Ÿ•๐’š+๐Ÿ”๐’›)ใ€—^๐Ÿ

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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.