By definition, a monomial is a polynomial that has one term.
In this case you have these monomials:
[tex]\begin{gathered} 60p \\ 12 \end{gathered}[/tex]In order to find the Greatest Common Factor (GCF) of this pair of monomials (which is also known as Greatest Common Divisor), you can apply the steps shown below:
Step 1. You need to descompose each monomial into its prime factors, as following:
[tex]\begin{gathered} 60p=2\cdot2\cdot3\cdot5\cdot p=2^2\cdot3\cdot5\cdot p \\ 12=2\cdot2\cdot3=2^2\cdot3 \end{gathered}[/tex]Step 2. Now you must choose the common factors with the lowest exponents and then you must multiply them. The product will be the Greatest Common Factor. Then:
[tex]GCF=2^2\cdot3=4\cdot3=12[/tex]The answer is:
[tex]GCF=12[/tex]