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Free GRE Practice Question

Question 1 of 1
ID: GRE-MCQ-17
Section: Quantitative Reasoning - Multiple Choice with one answer
Topics: Algebra; Algebraic expressions
Difficulty level: Challenging

Practice Mode: Single selected Question » Back to Overview

If x=4+\dfrac{1}{a} and y=4-\dfrac{1}{a}, what is the value of a^2 if x^2+y^2=\dfrac{65}{2}?

A\dfrac{1}{4}
B\dfrac{1}{2}
C2
D4
E8
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