This is a geometric sequence. The first term is -2 and the common ratio is -2.
an = -2(-2)n-1 = (-2)n
Alice S.
asked 04/10/20-2, 4, -8, 16
This is a geometric sequence. The first term is -2 and the common ratio is -2.
an = -2(-2)n-1 = (-2)n
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