GMAT Algebra

Master this fundamental GMAT algebra skill, which you will need on test day! Practice Problems First, try these practice problems. 1) (A) (x – 4)(x + 6) (B) (x + 4)(x – 6) (C) (x – 4)(x – 6) (D) (x – 2)(x + 12) (E) (x + 2)(x – 12) 3) If , then […]

How can you apply the FOIL concept to simplifying and expanding? To get you ready for today’s topic, try working through this GMAT algebra question first: 1) (A) (B) (C) (D) (E) If you find this problem relatively easy, probably most of this post will be for you as well. If this problem makes your […]

Let’s start out with a couple practice questions. While these look like geometry questions, you’ll have to put your GMAT algebra skills to work! Practice questions 2) What is the length of the diagonal of a square with area 48? The geometry of those questions is not too difficult, but the trick is how to […]

You may remember this GMAT algebra formula, one of the sleekest factoring tricks around: This formula, called “the difference of two squares” formula, is a favorite of standardized test writers. A simple enough pattern: see if you can detect where it shows up in the following challenging problems.   1) (A) (B) (C) (D) (E) […]

Today’s GMAT algebra problem and explanation comes from the OG 12th Edition, Problem Solving Practice Problem #149. Here is the problem as it appears in the OG: During a trip, Francine traveled x percent of the total distance at an average speed of 40 miles per hour and the rest of the distance at an […]

Today’s GMAT algebra problem and case study comes from the OG 12th Edition, Problem Solving Practice Problem 173.   Here is the problem as it appears in the Official Guide: 173) Which of the following describes all values for which >   OK, this is a quadratic inequality, a relatively advanced math topic for the […]

GMAT Math will ask you about absolute values.  Mastering the GMAT algebra skills to answer them requires sophisticated understanding. Somewhere along the line, perhaps in middle school, you probably learned:   |positive| = positive and |negative| = positive   In other words, the equation |x| = 5 has the solution: x = 5 or x […]