When you "simplify" a square root, you simply factor out all the perfect squares that are factors. For example, to simplify the square root of 75, first I recognize that the perfect square 25 goes into it. So 75 = 25 x 3. Therefore the square root of 75 equals the square root of 25 times the square root of 3.
Answer:
The square root of 75 is approximately 8.66025 or 5√3 in radical form.
