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Equations & Systems
hard
0:00.0
How many real solutions does the equation
∣
x
2
−
5
x
+
4
∣
=
1
|x^2 - 5x + 4| = 1
∣
x
2
−
5
x
+
4∣
=
1
have?
A
1
B
2
C
3
D
4
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