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Use the elimination method to find all solutions of the system {
Undergraduate
Use the elimination method to find all solutions of the system { x 2 + y 2 = 5 x 2 - y 2 =
Use the elimination method to find all solutions of the system
{
x
2
+
y
2
=
5
x
2
-
y
2
=
2
The four solutions of the system are:
the one with x
<
0
,
y
<
0
is
x
=
y
=
the one with x
<
0
,
y
>
0
is
x
=
y
=
the one with x
>
0
,
y
<
0
is
x
=
y
=
the one with x
>
0
,
y
>
0
is
x
=
y
=
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