### Factoring - Rational Expressions

Lesson by Mike McGarry
Magoosh Expert

Summary
The essence of the content revolves around simplifying rational expressions, a critical skill for tackling GMAT algebra questions.
• Rational expressions are ratios of two algebraic expressions that often require simplification for GMAT problems.
• Simplification involves factoring both the numerator and the denominator and then canceling out common factors.
• When expressions involve addition or subtraction in the numerator, they can be split into separate fractions with a common denominator for further simplification.
• Practical examples illustrate the process of simplification, including dealing with expressions that contain different variables and require strategic manipulation.
• Practice questions underscore the importance of recognizing opportunities to simplify by canceling common factors, significantly easing the solution process.
Chapters
00:00
Understanding Rational Expressions
00:33
Simplifying Through Factoring
02:55
Practical Application and Practice