Question

  Rút gọn

Answer 1

Answer 2

a) \(\sqrt{3+2\sqrt{2}}-\sqrt{3-2\sqrt{2}}=\sqrt{2}+1-\sqrt{2}+1=2\)

b) \(\sqrt{7+2\sqrt{6}}-\sqrt{7-2\sqrt{6}}=\sqrt{6}+1-\sqrt{6}+1=2\)

c) \(\sqrt{9-2\sqrt{8}}-\sqrt{9+2\sqrt{8}}=\sqrt{8}-1-\sqrt{8}-1=-2\)

d) \(\sqrt{16-2\sqrt{15}}+\sqrt{16+2\sqrt{15}}=\sqrt{15}-1+\sqrt{15}+1=2\sqrt{15}\)

Answer 3

a: \(\sqrt{3+2\sqrt{2}}-\sqrt{3-2\sqrt{2}}\)

\(=\sqrt{2}+1-\sqrt{2}+1\)

=2

b: \(\sqrt{7+2\sqrt{6}}-\sqrt{7-2\sqrt{6}}\)

\(=\sqrt{6}+1-\sqrt{6}+1\)

=2