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Mathematics
Mathematics
Problem
(a) A circle has centre
C
(
2
,
−
3
)
C(2,-3)
C
(
2
,
−
3
)
and radius
5
5
5
. Write its equation in standard form. (b) Expand the result of part (a) and express the equation in the general quadratic form
x
2
+
y
2
+
2
g
x
+
2
f
y
+
c
=
0
x^{2}+y^{2}+2gx+2fy+c=0
x
2
+
y
2
+
2
g
x
+
2
f
y
+
c
=
0
.
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