Question 777189
What you ask is imprecise and possibly wrong.  You described two square roots and then you describe something that expects three or four square roots.  


Do you have something that contains a fraction bar?  


Let me take a guess about what you tried to describe:

{{{sqrt(s)/((sqrt(s))^3)}}}

That would not be two square roots on top of one another.  That would be one square root on top of another square root that has been raised to a power.  


In case that is what you have, and you want to simplify it, use these two main rules about exponents:
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{{{b^(1/2)=sqrt(b)}}} just a notational definition;
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{{{(b^m)(b^n)=b^(m+n)}}}
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{{{(b^m)/(b^n)=b^(m-n)}}}
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