Question

Find whether (√2,3√2)is a solution of x-y=√2

Answer 1

$x - y = \sqrt{2}$
$x - y - \sqrt{2 } = 0$
if solution is ( $\sqrt{2},3\sqrt{2}$)
$\sqrt {2}-3\sqrt{2}-\sqrt{2}=0$
$-3\sqrt{2}=0$
it is not true