\( C = \sqrt{2x} + \sqrt{4x - 1} - \sqrt{2x - \sqrt{4x - 1}}, \, x > \frac{1}{2} \) 2. \( B = \sqrt{x} + 2\sqrt{2x - 4} + \sqrt{x - 2\sqrt{2x - 4}}, \, 2 \leq x < 4 \)

----- Nội dung ảnh -----
1. \( C = \sqrt{2x} + \sqrt{4x - 1} - \sqrt{2x - \sqrt{4x - 1}}, \, x > \frac{1}{2} \)

2. \( B = \sqrt{x} + 2\sqrt{2x - 4} + \sqrt{x - 2\sqrt{2x - 4}}, \, 2 \leq x < 4 \)