simplify this?

Question

(sqrt 3 w t^9)(sqrt 9 w^4 t^5)

Assume that all variables represent positive real numbers

Answer 1

sqrt 3 w t^9)(sqrt 9 w^4 t^5)=
sqrt (3 w t^9 * 9 w^4 t^5 )=
sqrt (27 w^5 t^14 )=
3 w^2 t^7 sqrt(3w)