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Home > CCA2 > Chapter 3 > Lesson 3.2.4 > Problem 3-102


Estacia wants to learn more about excluded values.

  1. Explain to Estacia why cannot be in the expression .

    What happens when you substitute for ?

     does not work here because it makes the expression undefined since dividing by is not possible.

  2. Find the excluded values of in each of the expressions of problem 3-99.

    What values make the denominator equal to ? These are known as excluded values.

  3. Create an expression that has the excluded values of and . Be prepared to share your expression to the class.

    Answers vary. Make sure that these two values make the denominator equal to .