How to find the product of two rational expressions and add in the constraints

The video tutorial explains how to simplify algebraic expressions by factoring and dividing common terms in the numerator and denominator. It emphasizes the importance of identifying restrictions on the variable X to avoid undefined expressions. The process involves factoring out X from both the numerator and the denominator, dividing out common terms, and determining the values that X cannot take to ensure the expression remains valid.

Explain why the expressions in the numerator and denominator can divide to one.

What is the significance of factoring the quadratic instead of solving it directly?