Question

-10,20,-40 what are the next two terms

Answer 1

80, -160

Explanation:

Each term is being doubled and the sign is reversing for every term. So -10 doubled and flipping the sign results in 20. Doubling 20 and flipping the sign results in -40. So on and so forth.

Answer 2

80

Explanation:

10+10= 20

20+20=40

40+40=80