Plz help me
(a²-b²)²+a²b²
factorise
plzz

Look at attachment. has all info needed. need

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.

X2 + y 2 = 36 x + y = 6 solve the system of equations.