Question 51394
First we have to multiply them or FOIlL them to get 6b^2-18b-60. Now we have to factor and find the GCF. The GCF would be 6 so we get 6(b^2-3b-10). So if you were just looking for the GCF it would be 6.  If you were looking to factor the whole thing then the answer would be 6(b+2)(b-5). Hope this helps!!!