Question

How do i Write the explicit formula that represents the geometric sequence
-2, 8,-32,128

Answer 1

nor sure what the explicit formula is but for a geometric sequence the formula is ar^n
where a is the first term and r is the common ratio n is the nth term in the series

Answer 2

here you have 4 terms
r is the ratio between 4th and 3rd same as between the 3rd and 2nd