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Mathematics
Valeria Tucker
25 March, 05:55
Find the fifth term of an=2 (-1) n
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Alvin Dunlap
25 March, 06:46
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The 5th answer in this series would be - 2.
We know this because in any problem where we have a base (2) being multiplied by a - 1^n power, the numbers will simply alternate between positive 2 and negative 2. All of the even powers will be positive 2 and all of the odd numbers will be negative 2. See the work below.
2 (-1) (-1) (-1) (-1) (-1)
2 (1) (-1) (-1) (-1)
2 (1) (1) (-1)
2 (-1)
-2
So since 5 is odd, the answer is negative 2.
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