Find the set of all z such that neither 2 + z nor 2 - z is in the interval \([-3,3]\). Express your answer as an interval or as a union of intervals.
similar: https://www.jiskha.com/questions/1495636/find-the-set-of-all-z-such-that-neither-2-z-nor-2-z-is-in-the-interval-1-1-express
