The graph of
f
(
x
)
=
−
x
3
+
5
x
+
1
\displaystyle {f{{\left({x}\right)}}}=-{x}^{{3}}+{5}{x}+{1}
f
(
x
)
=
−
x
3
+
5
x
+
1
is shown below.
Estimate the solution(s) to the equation
f
(
x
)
=
8
\displaystyle {f{{\left({x}\right)}}}={8}
f
(
x
)
=
8
.
1
2
3
4
-1
-2
-3
-4
1
2
3
4
5
6
7
8
9
10
11
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
Enter solution(s) in the box below. If there is more than 1 solution, separate the values with a comma (example: -3, 2, 4.5).
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\displaystyle