Quadratic equations are a key part of the GRE's algebra content. While the on-screen calculator can be used, true speed and accuracy come from mastering the core algebraic methods and knowing the strategic shortcuts for question types like Quantitative Comparison.
Start with the core definition of a quadratic equation and use our interactive verifier to understand what the "roots" of an equation represent.
Learn the step-by-step process of factoring quadratic expressions to find the roots of an equation. This is a crucial non-calculator skill.
Master the universal tool for solving any quadratic equation. Our interactive calculator shows you how to apply the formula step by step.
Learn the formulas for finding the sum (-b/a) and product (c/a) of the roots without actually solving the equation—a vital GRE time-saver.
Apply the Sum of Roots formula to a real QC problem. See how the conceptual shortcut is much faster than brute-force calculation.
Stop calculating! Learn how to use the properties of symmetry to solve hard SD questions in seconds.
How to use 'Extreme Values' to find the range of a sum without calculating every fraction.
Forget formulas for a moment. Learn the 'Systematic Listing' method to build an unshakable intuition for Permutations & Combinations.
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