Question

check whether (underroot2,4underroot2) is a solution of x-2y=4 or not?

Answer 1

$\sqrt{2} \: and \: 4 \sqrt{2} \: are \: not \: the \\ \: solution \: of \: x - 2y = 4 \\ \\ its \: solution \: are \\ 1 - \sqrt{5} \: and \: 1 + \sqrt{5}$
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