Algebra-2

Question Analysis
This problem tests the student's understanding of simplifying the product of conjugate binomial radical expressions.

Key Concept Explanation
When multiplying conjugate binomial radicals, the outer and inner terms cancel out, leaving the square of the first term minus the square of the last term. This is a special property of conjugates.

Step-by-step Solution
1. Identify the conjugate pair:
2. Apply the difference of squares formula:
3. Substitute