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Given the rational function
f
(
x
)
=
x
2
+
4
x
+
3
x
2
-
4
x
-
21
find any hole(s) of the function.
x
=
-
3
,
x
=
7
x
=
-
1
x
=
7
x
=
-
3
x
=
-
3
,
x
=
-
1
There are no holes
Box 1:
Select the best answer
x
=
-
3
↑
X
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