Question

What is the sum of the geometric sequence −4, 24, −144, ... if there are 6 terms?

Answer 1

-6718464

Explanation:

-4x-6=24

24x-6=-144

and keep on doing times -6 6 more times

Answer 2

Answer: The sum is 25220

Explanation:

1) -4

2) -4*-6 =24

3) 24*6 = 144

4) 114*-6 = -864

5) -864*6 = -5184

6) -5184*-6= 31104

The sum is: 25220