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Use the formula to evaluate the series -3+6-12+24-...-a7

Use the formula to evaluate the series -3+6-12+24-...-a7
asked 47.7k views
4 votes
Use the formula to evaluate the series -3+6-12+24-...-a7

asked
User Nicover
by
8.1k points

1 Answer

2 votes

Answer

-129 is correct

answered
User Kremena
by
9.3k points
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