Answer:
Step-by-step explanation:
The given expression is
[tex](7f^{2}-12f)7f^{2}-12f[/tex]
As you can observe in the given expression, a common factor to all terms is [tex]f[/tex], because it's present in each term.
To a factor be common, it has to be present in all terms, like [tex]f[/tex] in this case.
[tex]7f^{2}[/tex] has [tex]f[/tex] as a factor.
[tex]12f[/tex] has [tex]f[/tex] as a factor.
Therefore, the right answer is A.
