Rút gọn các biểu thức
A= \(\sqrt{\left(\sqrt{2}-1\right)^2}\)-\(\sqrt{3+2\sqrt{2}}\)
B= \(\sqrt{6+2\sqrt{5}-\sqrt{29-12\sqrt{5}}}\)
C= \(\sqrt{\left(2\sqrt{5}-7\right)^2}\)-\(\sqrt{45-20\sqrt{5}}\)
D= \(\sqrt{\left(3-\sqrt{5}\right)^2}\)+\(\sqrt{5}\)