Answer:
The common factor is 2b
Explanation:
By factorization, we can determine the common factor by finding a number or variable which when multiplied by other numbers maintains a specific pattern.
For the question above, when 2b is multiplied by 4b² we arrive at 8b². Similarly when 2b is multiplied by 5 we have 10b, hence 2b is the common factor of both 8b³ and 10b.