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Equations & Systems
hard
0:00.0
If
x
+
y
=
5
x+y=5
x
+
y
=
5
and
x
−
y
=
1
x-y=1
x
−
y
=
1
, what is
x
2
−
y
2
x^2-y^2
x
2
−
y
2
?
A
5
B
24
C
6
D
25
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