PowerScore GRE Forum Featured Post: Difficult Binomial Systems of Equations Made Easy

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The "Gut Check" Moment

Binomial_expansion_visualisation.svg.pngFrom time to time, we like to feature questions and answers on our GRE forum because many of these discussions can be helpful to other students as well. This post concerns a binomial system of equations that asks for students to combine information to give the answer to a quadratic expression. It is of particular interest because the algebraic approach to solving the problem quickly turns into a morass of complex roots and unexpectedly difficult reverse FOIL, leading to the quadratic equation, knowledge of which is not tested on the GRE. Therefore, there must be an easier approach! 

This observation that "there must be an easier approach" is universally true on the GRE. If you ever find yourself hitting a wall or stuck in a complex series of algebraic operations, stop! Revisit the core information given and experiment with an alternative approach. GRE problems are often structured to lead students into lengthy approaches that waste time and often result in small errors that lead to the wrong answer. While faster approaches may seem unconventional, any approach that is both fast and gets you to the right answer is the best approach.

Read below for a quick preview of this discussion on the GRE forum. For the full post, please follow the link to the GRE forum post here.

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Read the whole post here!

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The Forum posts selected for this series are chosen because they have a universal quality to them. In other words, we’ve selected posts that contain information that can be used by test takers of any background and score level. So, although the specific question posed by the students may not be one you have, when our instructors answer they have gone beyond the specific question and brought in broader elements that you can use. Consequently, these posts, and the situations therein, are virtually guaranteed to resonate with you on some level. Make sure to register for the GRE Forum for free today, and get your own GRE and Grad Admissions questions answered by a PowerScore expert.

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