Answer:
Step-by-step explanation:
Discussion
7 and 8 do not have an integer as a common factor (except 1, but it does not count).
a^3 and a^4 have a common factor of a^3
you know this because a^3 is a * a * a
a^4 = a * a * a * a
a^3 and a^4 have at least 3 "a"s
Answer: a ^3
