Удиви меня

F x2 2x

F x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2x
F x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2x
F x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2xF x2 2x