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Asked: 2021-08-07T21:34:09+05:30 In:

Check which of the following are solutions of the equation x–2y = 4 and which are not:(iv) (√2, 4√2) .Q3(4)

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How i solve the best solution of ncert class 9th linear equations in two variables . Find the best solution of exercise 4.2 question number 3(4) , give me the simplest and easiest solution of this question. Check which of the following are solutions of the equation x–2y = 4 and which are not:(iv) (√2, 4√2)

best math ncert solutionexercise 4.2 ncertlinear equations in two variables ncertncert class 9th solution
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    1. Guru

      Solution:

      (x,y) = (√2,4√2)

      Here, x = √2 and y = 4√2

      Substituting the values of x and y in the equation x–2y = 4, we get,

      x –2y = 4

      ⟹ √2-(2×4√2) = 4

      √2-8√2 = 4

      But, -7√2 ≠ 4

      (√2,4√2) is not a solution of the equation x–2y = 4

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