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Equations & Systems
easy
0:00.0
Find
x
x
x
if
x
2
−
4
=
0
x^2 - 4 = 0
x
2
−
4
=
0
and
x
>
0
x > 0
x
>
0
.
A
1
1
1
B
2
2
2
C
4
4
4
D
−
2
-2
−
2
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