Answer:
Step-by-step explanation:
20 is 8x8^5=262144 (8x8)^5= 1073741824 so they are not the same
21 is (3^2)^-3 = 0.001372 (3^3)^-2=0.001372 THEY ARE NOT THE SAME
okay thats
all i got its a bit hard to read for me sorry
