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Polynomials
hard
0:00.0
What is the number of real roots of
x
4
+
3
x
2
+
1
=
0
x^4 + 3x^2 + 1 = 0
x
4
+
3
x
2
+
1
=
0
?
A
1
B
0
C
4
D
2
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