Question

3, -9, 27, -87...... Next 3....243, -729, 21870, -3, -6 90, -99, 10827, -9, 3

Answer 1

The sequence que have is:

`3,-9,27,-81,\ldots`

SO we can see the the sequaence is 3 square and the sign is alternating so the nex term will be:

`\begin{gathered} 3^5=243 \\ -3^6=-729 \\ 3^7=2189 \end{gathered}`

So is opyion one