Bài 1: Tìm ĐKXĐ
1, \(\sqrt{2x-1}\)+ \(\frac{\sqrt{x-3}}{\sqrt{5-x}}\)
2, \(\sqrt{x-1}\)+ \(\frac{\sqrt{2-x}}{\sqrt{x+1}}\)
Bài 2: Tính
1, A = \(\sqrt{6+2\sqrt{5}}\) - \(\sqrt{6-2\sqrt{5}}\)
2, B = \(\sqrt{4+\sqrt{15}}\) + \(\sqrt{4-\sqrt{15}}\) - \(2\sqrt{3-\sqrt{5}}\)
3, C = \(\sqrt{4+\sqrt{10}+2\sqrt{5}}\) + \(\sqrt{4-\sqrt{10}+2\sqrt{5}}\)
4, D = \(\sqrt{15-6\sqrt{6}}\) + \(\sqrt{15+6\sqrt{6}}\)
5, E = \(\frac{\sqrt{2}+\sqrt{3}+\sqrt{6}+\sqrt{8}+4}{\sqrt{2}+\sqrt{3}+\sqrt{4}}\)
6, F = \(\sqrt{\left(1-\sqrt{2021}\right)}\). \(\sqrt{2022+2\sqrt{2021}}\)
7, G = \(\frac{2+\sqrt{3}}{\sqrt{2}+\sqrt{2+\sqrt{3}}}\) + \(\frac{2-\sqrt{3}}{\sqrt{2}-\sqrt{2-\sqrt{3}}}\)