Algebra-1

Question Analysis
This question tests the student's ability to use the property that the product of a complex number and its conjugate is always a real number. The formula used is .

Key Concept Explanation
The key concept here is the property of the product of a complex number and its conjugate, which results in a real number.

Step-by-step Solution
1. Identify the given complex number: .
2. Find the complex conjugate:

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