Question

What are the next two terms in the sequence?: 1, -2, 4, -8​

Answer 1

16 and -32

Explanation:

-2÷1 = -2

4÷(-2) = -2

-8:4 = -2

So this is a geometric sequence with a common ratio of -2

Therefore:

the 5th term: -8×(-2) = 16

the 6th term: 16×(-2) = -32