Answer :

dannielle

Answer:

3b^2

Step-by-step explanation:

12b^2=3 b^2 *4

15b^3=3*5*b^2*b

the greatest common factor is 3b^2

Answer:

3b^2.

Step-by-step explanation:

The GCF of 12 and 15 is 3, and

the GCF of b^2 and b^3 is b^2.

Answer is 3b^2.

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