$\sqrt{11-2}$

$\sqrt{11}-\sqrt{2}$

$11-\sqrt{2}$

$\sqrt{11}-2$

$3\times\sqrt{2}$

$\frac{\sqrt{2}}{4}$

$\frac{4}{\sqrt{2}}$

$\frac{\sqrt{4}}{4}$

$\sqrt{18}-2$

$\sqrt{18}-17$

$18-\sqrt{3}$

$\sqrt{18-2}-2$

$\sqrt{\pi}$

$\sqrt{2}+\pi$

$\sqrt{\pi}-\sqrt{\pi}$

$\sqrt{\pi}+\sqrt{\pi}$

$\sqrt{2}+\sqrt{2}$

$\sqrt{2}\times\sqrt{2}$

$2+\sqrt{2}$

$\sqrt{7-5}$

$\sqrt{6}+3$

$\sqrt{6}+\sqrt{3}$

$6+\sqrt{3}$

$\sqrt{3}-\sqrt{3}$

$2\sqrt{5}$

$2+\sqrt{5}$

$\sqrt{5}\sqrt{5}$

$5-\sqrt{5}$

$\frac{\pi}{2}$

$2\sqrt{36}$

$2\sqrt{44}$

$\frac{\sqrt{44}}{2}$

$\sqrt{20}+5$

$\sqrt{20+5}$

$20+\sqrt{5}$

$\sqrt{5}-20$

$3\times\sqrt{3}$

$\frac{2\sqrt{3}}{3\sqrt{3}}$

$\sqrt{3}-1$

$1-\sqrt{3}$