Question

Find the next three terms of the sequence.
-2, -12, -72, -432, ...

a) -1,728, -6,912, -27,648
b) -1,728, -10,368, -62,208
c) -2,592, -10,368, -41,472
d) -2,592, -15,522, -93,312

i dont know how to solve this, it doesn't make sense to me please help!

Answer 1

well my calculator says 6 * 72 = 432
I wonder what 6 * 432 is?

Answer 2

Find the next three terms of the sequence.
Or a geometric sequence with a common ration 6 and a=-2
For T5,T6 T7
Tn=(-2)(6)^(n-1)
T5=(-2)(6^(5-1)=-2(1296)=-2592