Question

Simplify
$\sqrt{50}-\sqrt{98}$

Answer 1

$\sqrt{50}-\sqrt{98}$

$\Rightarrow$ $\sqrt{25\times 2}-\sqrt{49\times 2}$

$\Rightarrow$ $\sqrt{25}.\sqrt{2}-\sqrt{49}.\sqrt{2}$

$\Rightarrow$ $5\sqrt{2}-7\sqrt{2}$

$\Rightarrow$ $-2\sqrt{2}$

$\Rightarrow$ $-2\times \left(1.414\right)$

$\Rightarrow$ $-2.828$