What is the greatest common factor of 72x^2y and 18xy?
select one of the options below as your
a. 9x
b. 9xy
c. 18x
d. 18xy

For this case we have the following expressions:

The biggest common factor for each expression is given by:

Therefore, the biggest common factor is the one that is repeated in both terms.

We have then that for this case is:

the greatest common factor of 72x ^ 2y and 18xy is:

D. 18xy