Divide square root of 10 over square root of two provide an exact answer. Would it be four square root of five or two square root of 10 or two square root of five. This expression is already simplified and cannot be divided further.

To simplify the expression \(\frac{\sqrt{10}}{\sqrt{2}}\), you can use the property of square roots that states \(\frac{\sqrt{a}}{\sqrt{b}} = \sqrt{\frac{a}{b}}\).

So, we have:

\[
\frac{\sqrt{10}}{\sqrt{2}} = \sqrt{\frac{10}{2}} = \sqrt{5}
\]

Therefore, the exact answer is \(\sqrt{5}\).

So to clarify your options, it's neither four square roots of five, nor two square roots of 10, nor two square roots of five; it simplifies directly to just \(\sqrt{5}\).