2, -1, -1, 0, -1, 1, - what are the next three numbers in the pattern? describe the pattern.

-2, -1, -1, 0, -1, 1, -2 is your pattern

What are the next three numbers in the pattern?

What you do is each number is the addition of the next two numbers

So you next three numbers are 3, -5, 8

8-5=3, 

3-2=1,

1-1=0 and so on 

3, -5, 8