Algebra-1

Question Analysis
This question evaluates the student's understanding of the domain of a rational function. The domain is restricted by the requirement that the denominator cannot be zero.

Key Concept Explanation
The domain of a function is the set of all possible input values (independent variable, usually ) for which the function is defined and meaningful. 

Step-by-step Solution
1. Identify the function:
2. Determine the value that makes the denominator zero:

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