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Mathematics
Problem
For the function
f
(
x
)
=
x
2
−
4
x
−
2
f(x)=\dfrac{x^{2}-4}{x-2}
f
(
x
)
=
x
−
2
x
2
−
4
, which of the following is its domain? a)
R
\mathbb{R}
R
b)
R
∖
{
−
2
}
\mathbb{R}\setminus\{-2\}
R
∖
{
−
2
}
c)
R
∖
{
2
}
\mathbb{R}\setminus\{2\}
R
∖
{
2
}
d)
R
∖
{
−
2
,
2
}
\mathbb{R}\setminus\{-2,2\}
R
∖
{
−
2
,
2
}
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