Your Insider Guide to the GRE

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Free GRE Test Questions

Question 1 of 1
ID: GRE-SM-6
Section: Quantitative Reasoning - Multiple Choice with one or more answer
Topics: Algebra; Functions
Difficulty level: Easy

(Practice Mode: Single selected Question » Back to Overview)

If $f(x)$ is a function such that $f(x)+f(-x)=4$, which of the following could be the expression for $f(x)$?

Indicate all such expressions.

[ Note: Select one or more answer choices ]

A$\mathrm{3}x\mathrm{+2}$
B$x^2+2$
C$x^3-2$
D$x^3+2$
E$x+\frac{1}{x}+2$

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