Jose Mourinho made a winning Premier League start as Manchester United manager with a comprehensive opening victory at Bournemouth.
Juan Mata, who was substituted after coming on in last week's Community Shield, opened the scoring with a tap-in after Simon Francis' error.
Wayne Rooney headed the second before Zlatan Ibrahimovic marked his United league debut with a goal from 25 yards.
Adam Smith scored a consolation goal for the Cherries.
United were without world-record £89m signing Paul Pogba through suspension, while midfielder Henrikh Mkhitaryan started on the bench, with Mata preferred.