ANSWER
The greatest common factor is 3
Step-by-step explanation
The given expression are
![3 {h}^(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j4b6s1unqevonm1b1yhjzc0zfaa50wm0dl.png)
and
![- 6f](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2m6k563i95osbq00ilrddtw6zgkmqau6s5.png)
We express both expressions as product of primes.
![3 {h}^(5) = 3 * {h}^(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/56e5q4ic1qnitysdmnhlwmxre0g1cqoa0s.png)
and
![- 6f = - 2 * 3 * f](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8f56wgiomozfitt34siu707m4wkniyvlnt.png)
The greatest common factor is the product of the least powers of the common factors.
The greatest common factor is 3.