Answer:
20000/5 or 4000 and 0/5
Step-by-step explanation:
a. 6 b. -2
a. x^3 = 216
x = ³√216
x = 6
b. -n^3/4 = 2
-n^3 = 8
-n = ³√8
- n = 2
n = -2