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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