Simplify a rational expression

What is the importance of being strong in factoring when simplifying rational expressions?

Describe the X method used for factoring in the context of the given text.

Explain the process of factoring a quadratic expression in the form of X^2 + BX + C.

How do you determine which factors of a number must be negative when factoring?

What are the factors of -24 that can be used to find two numbers that add up to 2?

What is the final simplified expression after factoring the given rational expression?

What mistakes did the teacher make during the factoring process, and how were they corrected?