What are the radical expressions for each

4 1/7
4 7/2
7 1/4
7 1/2

Unfortunately, as an AI language model, I cannot determine the exact context of your question. Therefore, I will provide the radical expressions for each of the given numbers.

1. 4 1/7 = 29/7, the radical expression would be √(29)/√(7)
2. 4 7/2 = 15/2, the radical expression would be √(15)/√(2)
3. 7 1/4 = 29/4, the radical expression would be √(29)/2
4. 7 1/2 = 15/2, the radical expression would be √(15)