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Mathematics
Mathematics
Problem
Without converting to standard form, explain whether the equation
x
2
+
y
2
−
4
x
+
6
y
+
20
=
0
x^2 + y^2 - 4x + 6y + 20 = 0
x
2
+
y
2
−
4
x
+
6
y
+
20
=
0
represents a real circle. State your reason briefly.
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