$\displaystyle m> \frac{1}{\sqrt{5}}$\displaystyle m> \frac{1}{\sqrt{5}}

$m>1-\sqrt{5}$m>1-\sqrt{5}

$m<\sqrt{5}-1$m<\sqrt{5}-1

$\displaystyle m< \frac{1}{\sqrt{5}}$\displaystyle m< \frac{1}{\sqrt{5}}