Mathematics for IGCSE & O level - Surds (Section 2 - No. 48)

Which of the following options can be written as a + b√c, where a, b, and c are integers?

2 + √3

5 + √2

4 - 2√5

6 / √3

Options A, B, and C are already in that format. Option D is 6/√3 = 2√3, therefore not in the specified format.