radical 15 cannot be simplified.
13.8564
The square root of 137 cannot be simplified.
The expression is already in its simplest form.
19, -19
The answer depends on the form of the radical expression.
An expression cannot be solved. It may be simplified, but that is not the same thing. And how it is simplified depends on its form. An equation, or inequality, can be solved but, again, the method depends on its nature.
Expressed as a surd in its simplest form, 5 sqrt(20) = 10 sqrt(5).
3 radical 5
√97, which cannot be simplified.
There is no radical to simplify!
The square root of 252 in simplified radical form is 2√63.
√5
2,5
√105 in radical form is √105. It has no square factors and so cannot be simplified.
radical 85 cannot be simplified.
sqrt(51) cannot be simplified.