Bynum finished with 22 points and 15 rebounds. Kobe Bryant kicked in 16 points despite rolling his ankle.
The Lakers have won nine of their last 10 games, while the Mavericks are 2-3 after an eight-game win streak.
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'
Jordana Brewster on Paul Walker: 'He was an enormous presence in my life'