Help would be very needed

Which is the completely factored from of xy^3-x^3y

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Find the area of the regular hexagon if a side is 20 cm.