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
» Quit