Answer:
First option:
![27](https://img.qammunity.org/2020/formulas/mathematics/high-school/v6ilfxvnd3c23q9wjwuk8mtqoyhw75pbc6.png)
Second option:
![m](https://img.qammunity.org/2020/formulas/mathematics/middle-school/cq4we7rbaw8mvm9yuf211b2ffjo45x6v6x.png)
Third option:
Explanation:
By definition, the Greatest Common Factor (GCF) is the greatest factor that divides two or more numbers with zero remainder.
Given the expressions
and
, you can find the Greatest Common Factor using this procedure:
1. List the prime factors of each expression:
![54mn^4=2*3*3*3*m*n*n*n*n](https://img.qammunity.org/2020/formulas/mathematics/middle-school/elm0gahpnlp0gvhv1zo0qm1eh46lebssph.png)
2. List the common factors and multiply them. Then:
![GCF=3*3*3*m*n^2\\\\GCF=27mn^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/x5ylpwqazm9n900ajgnnt5jm3diqraxo67.png)
Therefore,
,
and
are part of the Greatest Common Factor.