Find the domain of the function .

MATHEMATICS · Single correct · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Find the domain of the function

f(x)=\dfrac{2x+5}{x^{2}-9}

. (a)

(-\infty,-3)\cup(3,\infty)

(b)

\mathbb{R}\setminus\{3\}

(c)

\mathbb{R}\setminus\{-3,3\}

(d)

\mathbb{R}\setminus\{-3,-\dfrac{5}{2},3\}