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  • Check which of the following are solutions of the equation x - 2y = 4 and which are not: (iv) (root 2, 4 root 2)

3.(iv)  Check which of the following are solutions of the equation x - 2y = 4and which are not:

   (iv)    (\sqrt2 , 4\sqrt2)

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 Given : x - 2y = 4

Putting  (\sqrt2 , 4\sqrt2),

we have ,   x - 2y =\sqrt{2}-2(4\sqrt{2})=\sqrt{2}-8\sqrt{2}=-7\sqrt{2}\neq 4

Therefore, (\sqrt2 , 4\sqrt2) is not a solution of x - 2y = 4.

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mansi

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