Multiplying rational expressions

The video tutorial explains the process of simplifying rational expressions by factoring and setting restrictions on denominators. It demonstrates how to factor expressions like X^2 - 16 and X^2 - 25 into their component parts. The tutorial then shows how to multiply these expressions, simplify the results, and determine which terms can be divided out. The final result is a simplified rational expression, and the video concludes with a summary of the steps involved in multiplying rational expressions.

Explain how to simplify the expression X + 5 / X + 5.

What is the final simplified form of the rational expression discussed in the text?