1. Chapter 4 Class 9 Linear Equations in Two Variables (Term 1)
  2. Serial order wise


Ex 4.2, 3 Check which of the following are solutions of the equation ๐‘ฅโˆ’2๐‘ฆ=4 and which are not: (iv) (โˆš2, 4โˆš2) Given equation ๐‘ฅโˆ’2๐‘ฆ=4 Putting x = โˆš๐Ÿ and y = ๐Ÿ’โˆš๐Ÿ in LHS ๐’™โˆ’๐Ÿ๐’š =โˆš2โˆ’2(4โˆš2) =โˆš2โˆ’8โˆš2 =โˆš2(1โˆ’8) =โˆ’๐Ÿ•โˆš๐Ÿ โ‰ 4 Since, LHS โ‰  RHS Hence, (โˆš2, 4โˆš2) is not a solution

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Davneet Singh
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.