Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Economist GRE Tutor’s plans all come with a set of practice exams that mirror the official GRE test. Our academic team worked hard to make sure that the practice tests are the closest experience you can get to the real GRE exam.

This admissions guide will help you plan your best route to a PhD by helping you choose the best programs your goals, secure strong letters of recommendation, strengthen your candidacy, and apply successfully.

To help you prepare for test day, I created the following sets of downloadable flashcards (in pdf format): 174 flashcards covering every formula, concept and strategy needed for the quantitative sections of the GRE.

A) Quantity A is greater. B) Quantity B is greater. C) The two quantities are equal. D) The relationship cannot be determined from the information given.

Doing computations we get quantity A equal to \(4x^4-4x^2+3x^3-3x\) and quantity B equal to \(4x^4+4x^2+3x^3+3x\). Now, simplifying we get A equal to \(-4x\) and B equal to \(3\). Then, whatever x between 0 and 1, B is greater!

Doing computations we get quantity A equal to \(4x^4-4x^2+3x^3-3x\) and quantity B equal to \(4x^4+4x^2+3x^3+3x\). Now, simplifying we get A equal to \(-4x\) and B equal to \(3\). Then, whatever x between 0 and 1, B is greater!

a short cut: extract one x from (x^3-x) we get x(x^2-1)(4x+3) on the left. extract one x from (4x^2+3x) we get x(x^2+1)(4x+3) on the right. x(4x+3) canceled out. (x^2-1)<(x^2+1)

correct: A (maybe includes miscalculatings!) (x^3 - x)(4x + 3) = 4x^4 + 3x^3 - 4x^2 -3x

(x^2 + 1)(4x^2 + 3x) = 4x^4 + 3x^3 + 4x^2 + 3x

We compare these two and simplify as much as possible. 4x^4 + 3x^3 - 4x^2 -3x vs 4x^4 + 3x^3 + 4x^2 + 3x Omitting 4x^4 + 3x^3: - 4x^2 -3x vs 4x^2 + 3x -(4x^2 + 3x) vs (4x^2 + 3x) a) When 4x^2 + 3x is negative then the value in the left will be positive when multiplied by it’s negative sign. And the right value will be negative and thus less. 4x^2 + 3x < 0 —> 4x^2 < -3x —> x < -3/4 b) When 4x^2 + 3x is positive the value in the right will be bigger. 4x^2 + 3x > 0 —> 4x^2 > -3x —> x > -3/4

BUT it's mentioned that x is between 0 and 1 and it will be case b. so A is bigger than B

x has no specific value. x can be positive or negative or zero. If so, why the answer is not D since (A) -4x^2-3x and B) 4x^2 + 3x have same value if x=0?

A) Quantity A is greater. B) Quantity B is greater. C) The two quantities are equal. D) The relationship cannot be determined from the information given.

We can solve this question using matching operations

x has no specific value. x can be positive or negative or zero. If so, why the answer is not D since (A) -4x^2-3x and B) 4x^2 + 3x have same value if x=0?

The OP posted 0 < x < 1 in the subject line, but forgot to add it to the question. I have since added that information to the question.

Cheers, Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com Sign up for my free GRE Question of the Dayemails