For what values of does the equation (2 + 1)^2 + 2 = 10 − 6 have two real and equal roots?

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.