Home > CCA2 > Chapter 3 > Lesson 3.2.4 > Problem 3-102
3-102.
Estacia wants to learn more about excluded values.
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. 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. 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
.