Question

POMOGITE!!!$\frac{7-\sqrt{7} }{\sqrt{7} }$
$\frac{7-\sqrt{7} }{\sqrt{7} }$
$\frac{7-\sqrt{7} }{\sqrt{7} }$
$\frac{7-\sqrt{7} }{\sqrt{7} }$
$\frac{7-\sqrt{7} }{\sqrt{7} }$

Answer 1

$\frac{7-\sqrt7}{\sqrt7}=\frac{\sqrt7\cdot \sqrt7-\sqrt7}{\sqrt7}=\frac{\sqrt7\cdot (\sqrt7-1)}{\sqrt7}=\sqrt7-1$