Mathematics · Simplification
A fitness center calculates its monthly efficiency score using the following expression: (Trainers)2 - (Cancellations)1/2 + (Equipment)1/3. If the center has 21 trainers, 256 membership cancellations, and 729 equipment pieces, what value will come in place of the question mark (?) in the equation below? (21)2 - (256)1/2 + (729)1/3 = ?
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