Question

Use the prime factorizations of 72 and 120 to find their gcf

Answer 1

72 = 2 * 2* 2 * 3 * 3

120 = 2 * 2 * 2 * 3 * 5

The greatest common factor (GCF) would be gotten from the factors common to both 72 and 120.

The common =  2 * 2 * 2 = 8

The GCF = 8

Answer 2

The gcf is 24 because that's the highest number you can multiply multiple times to get both those numbers.