Given:
There are give that the expression:

Step-by-step explanation:
According to the question:
We need to find the value of GCF.
So,
For the GCF:
Find the prime factors of each term in order to find the greatest common factor (GCF).
Then,
From the expression:

Then,
![\begin{gathered} 12a^5\operatorname{\rightarrow}*2*2*3* a* a* a* a* a \\ 38a^4b^2\operatorname{\rightarrow}*2*19* a* a* a* a* b* b \\ =2a^4 \end{gathered}]()
Final answer:
Hence, the value of GCF is shown below:
