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Mathematics
Problem
The eccentricity of the conic represented by
x
2
−
y
2
−
4
x
+
4
y
+
16
=
0
x^2 - y^2 - 4x + 4y + 16 = 0
x
2
−
y
2
−
4
x
+
4
y
+
16
=
0
is a. 1 b.
1
2
\frac{1}{2}
2
1
c.
−
1
-1
−
1
d.
2
\sqrt{2}
2
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