Answer:
3
Step-by-step explanation:
We are given that an expression
\(3a^2+9\)
We have to find the greatest common factor of \(3a^2+9\)
In order to find the GCF we will find the factor of each term
\(3a^2=3\times a\times a\)
\(9=3\times 3\)
The common factor in both terms is 3.
Hence, greatest common factor of \(3a^2+9\) is 3.
Answer: 3
