Whats the greatest common factor of ...

1. - 60r^2s^2t^2 and 45r^3t^3

2. 32m^2n^3 and 18m^2n^2 and 56m^3n^2

1.

-60r^2s^2t^2 = 15r^2t^2 (-4s^2)

and

45r^3t^3 = 15 r^2t^2 (rt)

answer: GCF = 15r^2t^2

2.

32m^2n^3 = 2 m^2n^2 (16n)

and

18m^2n^2 = 2m^2n^2 (9)

and

56m^3n^2 = 2m^2n^2 (28m)

so

answer GCF = 2m^2n^2

he rule of 78, the amount of unearned interest (finance charge that need not be paid) is given bywhere u is the amount of ...