4a2
GCF(28a5, 16a2) = 4a2.
36a2 - 60a + 25 = 36a2 - 30a - 30a + 25 = 6a(6a - 5) - 5(6a - 5) = (6a - 5)(6a - 5) = (6a - 5)2
(6a + 7b)(6a - 7b)
The GCF is 6.
The GCF is 9.
The GCF is 4.
The GCF is 30.
50
The GCF of 125, 200 is 25.
The GCF is 3.
The GCF is 2.
The GCF is 5.