Booker made 4 of 6 3-pointers.
Temidayo Yussuf had 11 rebounds for Long Beach State (14-18, 8-8 Big West Conference), which earned its fifth straight win.
The 49ers improve to 2-0 against the Highlanders on the season. Long Beach State defeated UC Riverside 71-67 on Feb. 23. UC Riverside finishes out the regular season against UC Davis on the road on Saturday.