**QC Questions & Algebra**

**Next Lesson**

Summary

The lesson focuses on strategies for tackling quantitative comparison (QC) questions on the GRE, particularly those involving algebraic expressions and patterns.

- Emphasizes the importance of understanding algebraic patterns such as the square of a sum, the square of a difference, and the difference of two squares.
- Illustrates through practice problems how to apply these patterns to solve QC questions effectively.
- Advises on multiplying both quantities by the same positive number, simplifying algebraic expressions, and the significance of recognizing perfect squares.
- Highlights the necessity of remembering to include the plus or minus sign when taking the square root of a variable squared.
- Stresses the importance of understanding inequalities and basic rules to deduce the relationship between two quantities.

Chapters

00:01

Algebraic Patterns in QC Questions

02:31

Strategies for Simplifying Expressions

04:41

Recognizing and Applying Algebraic Patterns

06:23

The Importance of the Plus or Minus Sign

07:53

Understanding Inequalities and Basic Rules

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