Solomon Hill and Brandon Ashley each contributed 10 points for the Wildcats (21-4, 9-4 Pac-12), who went back to their winning ways after falling in consecutive games to California and Colorado.
The two losses will likely mean Arizona exits the Top 10 for the first time in more than 3 months.
Utah (11-14, 3-10) got 16 points from Jarred DuBois led and 15 from Jason Washburn in the setback.
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