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Polynomials
hard
0:00.0
Determine the number of real roots of
x
4
−
2
x
2
+
5
=
0
x^4 - 2x^2 + 5 = 0
x
4
−
2
x
2
+
5
=
0
.
A
0
B
2
C
4
D
1
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