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Mathematics
Mathematics
Problem
Find the centre and radius of the sphere
2
x
2
+
2
y
2
+
2
z
2
−
2
x
−
4
y
+
2
z
+
3
=
0
2x^2 + 2y^2 + 2z^2 - 2x - 4y + 2z + 3 = 0
2
x
2
+
2
y
2
+
2
z
2
−
2
x
−
4
y
+
2
z
+
3
=
0
.
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