Perform the indicated operations and express answers in simplest form.
3/x + 2/y - 4/xy

What’s the domain of this function? fast

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

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