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Mathematics
Problem
For
h
(
x
)
=
5
x
+
7
x
2
−
2
x
−
3
h(x)=\dfrac{5x+7}{x^{2}-2x-3}
h
(
x
)
=
x
2
−
2
x
−
3
5
x
+
7
, the domain of
h
(
x
)
h(x)
h
(
x
)
is a)
R
∖
{
−
7
5
}
\mathbb R\setminus\{-\dfrac{7}{5}\}
R
∖
{
−
5
7
}
b)
R
∖
{
−
3
,
1
}
\mathbb R\setminus\{-3,1\}
R
∖
{
−
3
,
1
}
c)
R
∖
{
3
,
−
1
}
\mathbb R\setminus\{3,-1\}
R
∖
{
3
,
−
1
}
d)
R
∖
{
−
3
}
\mathbb R\setminus\{-3\}
R
∖
{
−
3
}
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