4x^4 + 9x^3 - 3x^2 - 18x - 10

The value √10 and √15 are plotted on the number line

What is the binomial expansion of (2x-3)^5

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.