Answer:
Step-by-step explanation:
7^8*7=
5764801 * 7= 40353607
A. 7^3*7^3= 343*343= 117649 <--- not the answer
B. 7^18/7^9= 40353607 <---- right answer
C. (7^3)^3= 343^3= 40353607 <------ right answer
D. 7^5+7^4= 16807+2401= 19208 <---- not the answer
E. 7^5*7^4= 16807*2401= 40353607 <---- right answer
