Simplify the expression $$ \frac{x^2 - 9}{x - 3} $$ . The si...

Question Analysis
This question tests the student's ability to simplify a rational expression by factoring and canceling out common factors.

Key Concept Explanation
When dividing polynomials, factor the numerator and the denominator, and then cancel out any common factors.

Step-by-step Solution
1. Factor the numerator:
2. Cancel out the common factor