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OLEGan [10]
3 years ago
11

-3, 6, -9, 12, -15, . . .

Mathematics
2 answers:
Nataly_w [17]3 years ago
8 0
The second one is right
Bas_tet [7]3 years ago
6 0
(-1)^(n)3n 
because you have to use the equation with your answer to find the right rule :)
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