Question

Check if this is solution of equation x-2y=4

$(\sqrt{2},4\sqrt{2})$

• A. True
• B. False

Answer 1

The correct option is B False

Given equation is
$x-2y=4$
$\sqrt{2}-2\left(4\sqrt{2}\right)=4$
$\sqrt{2}-8\sqrt{2}=4$,
$-7\sqrt{2}=4$ but $-7\sqrt{2}\ne 4$
$\therefore (\sqrt{2},4\sqrt{2})$ is not a solution.