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Geometric Sequences
medium
0:00.0
Find
a
2
a_2
a
2
if
a
n
=
(
−
3
)
n
a_n = (-3)^n
a
n
=
(
−
3
)
n
.
A
9
9
9
B
−
9
-9
−
9
C
−
3
-3
−
3
D
3
3
3
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