The solution to this problem is 5/2a^2b^5
Answer:
b
Step-by-step explanation:
The greatest common factor is the largest value two numbers share in common which multiplies to each of the numbers.
7ab has factors 7, a, b
has factors 2, 4, 8, b, b, b
These share in common b.
-4,-3,-2,-1,0
which means 4 numbers