Question

TÍNH:

a/\(\sqrt{8-\sqrt{60}}\)[giúp mk ik  tick cho]

b/\(\sqrt{9-2\sqrt{14}}\)

c/ \(\sqrt{7-2\sqrt{10}}\)

d/\(\sqrt{5+2\sqrt{6}}\)

e/\(\sqrt{12+6\sqrt{3}}\)

f/\(\sqrt{28-\sqrt{6\sqrt{3}}}\)

g/\(\sqrt{8+\sqrt{28}}\)

h/\(\sqrt{7+\sqrt{48}}\)

i/\(\sqrt{4-2\sqrt{3}}\)

k/\(\sqrt{12-\sqrt{44}}\)

l/\(\sqrt{15-2\sqrt{14}}\)

m/\(\sqrt{9+\sqrt{56}}\)

Answer 1

a) \(\sqrt{8-\sqrt{60}}\)=\(\sqrt{8-\sqrt{4.15}}\)=\(\sqrt{8-2\sqrt{15}}\)=\(\sqrt{\left(\sqrt{5}\right)^2-2\sqrt{5}\sqrt{3}+\left(\sqrt{3}\right)^2}\)=\(\sqrt{\left(\sqrt{5}-\sqrt{3}\right)^2}\)=l\(\sqrt{5}\)\(-\sqrt{3}\)l =\(\sqrt{5}\)\(-\sqrt{3}\)(do \(\sqrt{5}\)\(-\sqrt{3}\)>0)

Answer 2

Các câu còn lại bạn làm tương tự câu a là ra