Answer:
The numbers are
9,-27,81, -243
-18,-54,-162,-486
Step-by-step explanation:
a = first term r = common ratio
a - ar = 36
ar^2 - ar^3 = 324
a(1-r) = 36
ar^2(1-r) = 324
r^2 = 9
r = ±3
a - ar = 36
a(1 - (±3) = 36
a = 36/4 or 36/-2
a = 9 or -18
ar = 9× -3 or -18×3
= -27 or -54
ar^2 = -27×-3 or -54×3
= -81 or -162
ar^3 = -81×-3 or -162×3
= 243 or -486
