tính
a) \(\sqrt{25.16}\)
b)\(\sqrt{12,1.250}\)
c)\(\sqrt{0,4}.\sqrt{8,1}.\sqrt{1600}\)
d)\(\sqrt{2,7}.\sqrt{3}.\sqrt{360}\)
e)\(\sqrt{20,8^2-19,2^2}\)
f)\(\sqrt{13^2-12^2}\)
g)\(\sqrt{2+\sqrt{3}}.\sqrt{2-\sqrt{3}}\)
h)\(\sqrt{3+\sqrt{5}}.\sqrt{3-\sqrt{5}}\)
i) \(2\sqrt{3}.\left(\sqrt{3-1}\right)+\left(1+\sqrt{3}\right)^2-2\sqrt{6}\)
k) \(\sqrt{2-\sqrt{2}}.\sqrt{2+\sqrt{2}}\sqrt{8}\)
l) \(\left(\sqrt{3-\sqrt{5}}.\sqrt{3+\sqrt{5}}\right)^2\)