SOLUTION: nth element of sequences -1,2,-4,8 is

SOLUTION: nth element of sequences -1,2,-4,8 is

Algebra.Com

Question 1000369: nth element of sequences -1,2,-4,8 is
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Same question asked about three times.

Let n be the index.
Sign is alternating as .
Basic size of terms is according to .
Put them together.
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