Simplify and solve the square root of 135bc^2d^3 times the square root of 5b^2d.

The first thing to remember is
that when youre multiplying square roots, you can combine everything underneath the radical as
if its not there, so lets multiply the two before getting to the square root of it
all.

135*5 is easy enough: 675. Now, the rest multiplies together fairly
easily. When you multiply numbers with...