Section 5 #2

Quantity A : x + 1 , Quantity B : x + 1 Quantity A is greater., Quantity B is greater., The two quantities are equal., The relationship cannot be determined from the information given.

2 Explanations

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Raafe Khan

If you compare using the box method we will get

x^2 +1 [] x^+1

then subtract one from both sides

x^2 [] x^3

Multiply both sides by 1/(x^2)

1 [] x

Since x<1 ; The answer is A

Oct 25, 2014 • Comment

Jonathan , Magoosh Tutor

Nice job! It's fine to multiply both sides by 1/(x^2) because we know that's a positive quantity.

Jun 29, 2015 • Reply

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Chris Lele

Dec 8, 2012 • Comment

PRATHIBHA AMAND

sir when x=0 , is it right to cancel the terms by x2

Jun 26, 2015 • Reply

Jonathan , Magoosh Tutor

Actually we CAN cancel by x^2 here, because we know x^2 is positive. We wouldn't be able to cancel if we had a potentially negative value, however.

Jun 29, 2015 • Reply

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Section 5 #2

2 Explanations

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Official GRE Material

Section 5: Quantitative Reasoning

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