Giải thích các bước giải:

c.$\sqrt{14-2\sqrt{33}}$

$=\sqrt{11-2\sqrt{11}\cdot \sqrt3+3}$

$=\sqrt{(\sqrt{11}-\sqrt3)^2}$

$=\sqrt{11}-\sqrt3$

g.$\sqrt{16+2\sqrt{55}}$

$=\sqrt{\sqrt{11}+2\sqrt{11}\cdot \sqrt5+5}$

$=\sqrt{(\sqrt{11}+\sqrt5)^2}$

$=\sqrt{11}+\sqrt5$

k.$\sqrt{25+4\sqrt6}$

$=\sqrt{24+2\cdot 2\sqrt6\cdot 1+1}$

$=\sqrt{(2\sqrt6+1)^2}$ 

$=2\sqrt6+1$

g.$\sqrt{13+4\sqrt{10}}$

$=\sqrt{8+2\cdot 2\sqrt2\cdot \sqrt5+5}$

$=\sqrt{(2\sqrt2+\sqrt5)^2}$

$=2\sqrt2+\sqrt5$

s.$\sqrt{13-4\sqrt{10}}$

$=\sqrt{8-2\cdot 2\sqrt2\cdot \sqrt5+5}$

$=\sqrt{(2\sqrt2-\sqrt5)^2}$

$=2\sqrt2-\sqrt5$