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Polynomials
hard
0:00.0
Find the number of real roots of
P
(
x
)
=
x
4
+
4
x
−
1
P(x) = x^4 + 4x - 1
P
(
x
)
=
x
4
+
4
x
−
1
.
A
0
0
0
B
1
1
1
C
2
2
2
D
4
4
4
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