The domain for my first expression is the set of all

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The domain for my first expression is the set of all real numbers excluding 4, which is written in set notation as D= {w ǀ w ≠ 4}. In my second expression, there is no variable in the denominator meaning that it is a constant term. There will never be a time that the -12 will be zero, so there are no excluded values . In this expression, the domain is the set of all real numbers written in set notation as D= . No, both of my rational expressions do not contain excluded values in their domains . In my first expression, there is an excluded value because of the variable listed as w. If I were to multiply the 4 to 2, I would get 8. Subtracting 8 from 8 would leave me with zero in the denominator, and that would make the expression undefined. In the second expression, there is no variable, and any real number will never become zero. Reference
Dugopolski, M. (2012). Elementary and intermediate algebra (4th ed.). New York, NY: McGraw-Hill Publishing.

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