RÚT GỌN BIỂU THỨC
A=\(\sqrt{23+4\sqrt{5}}\)
B=\(\sqrt{11+4\sqrt{6}}\)
C=\(\sqrt{14-6\sqrt{5}}\)
D=\(\sqrt{22-8\sqrt{6}}\)
E=\(\sqrt{16-6\sqrt{7}}\)
F=\(\sqrt{9-4\sqrt{2}}\)
G=\(\sqrt{13-4\sqrt{3}}\)
H=\(\sqrt{7-4\sqrt{3}}\)
i=\(\sqrt{21-8\sqrt{5}}\)