Rút Gọn
a,\(\sqrt{23-8\sqrt{7}}\) - \(\sqrt{7}\)
b.\(\sqrt{11+6\sqrt{2}}\)- 3 -\(\sqrt{2}\)
c,\(\sqrt{3-2\sqrt{2}}\)+ \(\sqrt{6-4\sqrt{2}}\)
d,\(\sqrt{9-4\sqrt{5}}\)- \(\sqrt{14-6\sqrt{5}}\)
e \(\sqrt{13-4\sqrt{3}}\)- \(\sqrt{16-8\sqrt{3}}\)
g \(\sqrt{32-10\sqrt{7}}-\sqrt{43-12\sqrt{7}}\)