Answer:
2^4ab
Step-by-step explanation:
By factorizing 48ab^2 I get 2*2*2*2*3*a*b*b
By factorizing 32a^2b I get 2*2*2*2*2*a*a*b
All the factors that these have in common is 4 2's, one a, and one b, which is 2^4*ab, or 16ab.
