Algebra-2

Question Analysis
This problem assesses the ability to classify a complex number based on its real and imaginary parts.

Key Concept Explanation
A complex number is classified as follows:
Real number: If the imaginary part is zero.
Imaginary number: If the imaginary part is non-zero.
Pure imaginary number: If the real part is zero and the imaginary part is non-zero.

Step-by-step Solution
1. Identify the real part: The real part is