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Equations & Systems
medium
0:00.0
If
y
=
x
2
−
1
y = x^2 - 1
y
=
x
2
−
1
and
y
=
3
y = 3
y
=
3
, what is
x
x
x
?
A
0
0
0
B
±
2
\pm 2
±
2
C
2
2
2
D
−
2
-2
−
2
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