Question

find an equation for the nth term of a geometric sequence where the second and fifth terms are -8 and 512

Answer 1

`n_x = -4n_(x-1)\\`

where
`n_1` = 2

Explanation:

512/-8 = -64

difference of n = 3

`\sqrt[3]{64} = 4`

`n_x = -4n_(x-1)\\`

where
`n_1` = 2