Step 1:

The greatest common factor of $\"\"$ and $\"\"$ .

The greatest common factor is the product of the highest common factors in each number.

The factors of $\"\"$ are $\"\"$ .

The factors of $\"\"$ is $\"\"$ .

The greatest common factor of $\"\"$ and $\"\"$ is $\"\"$ .

Solution:

The greatest common factor of $\"\"$ and $\"\"$ is $\"\"$ .