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Mathematics
Mathematics
Problem
If the curves
a
x
2
+
4
x
y
+
2
y
2
+
x
+
y
+
5
=
0
ax^2 + 4xy + 2y^2 + x + y + 5 = 0
a
x
2
+
4
x
y
+
2
y
2
+
x
+
y
+
5
=
0
and
a
x
2
+
6
x
y
+
5
y
2
+
2
x
+
3
y
+
8
=
0
ax^2 + 6xy + 5y^2 + 2x + 3y + 8 = 0
a
x
2
+
6
x
y
+
5
y
2
+
2
x
+
3
y
+
8
=
0
intersect at four concyclic points, then the value of
a
a
a
is a.
−
6
-6
−
6
b.
−
4
-4
−
4
c.
4
4
4
d.
6
6
6
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