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Foundations
hard
0:00.0
If
3
x
+
2
=
9
x
−
1
3^{x+2} = 9^{x-1}
3
x
+
2
=
9
x
−
1
, what is the value of
x
x
x
?
A
2
2
2
B
3
3
3
C
5
5
5
D
4
4
4
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