GRE Sample Test 1 Quantitative Reasoning 1

Question : 7 of 20

Marks: +1, -0

(3x – 4y)(3x + 4y) = 2
Quantity A :

9x^2-16y^2

Quantity B : 4

Solution:

FOIL out the equation given, and you’ll get (3x − 4y)(3x + 4y) =

9x^2 − 16y^2

, so Quantity A is 2. Quantity B is therefore bigger, and the answer is (B).

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