# What is the 7th term of the geometric sequence where a1 = –4 and a5 = –1,024?

##### 1 Answer

Nov 25, 2015

#### Explanation:

The common ratio

The possible Real

In either case:

#a_7 = r^2 a_5 = 16*(-1024) = -16384#

So why do I say that

The Complex numbers

If

#a_7 = r^2 a_5 = (-16)*(-1024) = 16384#