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Mathematics, 29.10.2020 21:30 vvvvvvvv84

Select the correct answer. Let R be a system consisting of rational expressions. Which operations are closed for R?
O addition and subtraction only
O addition and multiplication only
O addition, subtraction, and multiplication only
O addition, subtraction, multiplication, and division


Select the correct answer. Let R be a system consisting of rational expressions. Which operations

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