Mathematics
SwishMan
41

For which operations is the set {–1, 1} closed? Choose all that apply. A.) addition B.) subtraction C.) multiplication D.) division

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(2) Answers
kingavisingh

C and D...............................

ElizbethLiddle208

The operation that is applicable to set  {–1, 1} can be determined by trying all of the operations. Addition: (-1+1) = 0 Subtraction (-1-1) = -2 Multiplication:  (-1*1) = -1 Division: (-1/1) = -1 Since zero is not included in the set given, the operations applicable are only multiplication and division

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