You may want to review multiplying terms with roots and polynomials by monomials first.

If one factor has more than one term, you proceed just as if it
was a polynomial. Multiply the other factor by each term. For
example, to multiply *a*√*a* by
−*a**b**c*^{2}√*d*
− *a*, you multiply it by the first term (getting
−*a*^{2}*b**c*^{2}√(*a**d*))
and by the second term
(getting *a*^{2}√*a*). So the answer is
−*a*^{2}*b**c*^{2}√(*a**d*)
− *a*^{2}√*a*.

In this case, we couldn't simplify; but, if there are any simplifications to be done, we should do them.