Granit Xhaka’s excellent free-kick set Arsenal on their way to a third consecutive victory under Unai Emery as Newcastle remain without a Premier League win.
Despite being frustrated in the first half, Xhaka opened the scoring for the Gunners with a long-range free-kick that flew past Magpies goalkeeper Martin Dubravka.
As the visitors grew in confidence, Mesut Ozil met the rebound of Alexandre Lacazette’s blocked effort to double his side’s advantage and ensure Arsenal won consecutive away league games for the first time since May 2017.
Ciaran Clark responded in stoppage time for the hosts, but Newcastle remain 18th in the table with just one win in their past 10 league games.