To factor the expression \( 72z + 8 \), we first look for the greatest common factor (GCF) of the two terms.
- The coefficients are 72 and 8. The greatest common factor of these two numbers is 8.
- We can factor out 8 from the expression:
\[ 72z + 8 = 8(9z + 1) \]
Thus, the factored form of \( 72z + 8 \) is:
\[ 8(9z + 1) \]
Here, 8 is the whole number greater than 1, and \( 9z + 1 \) is the remaining factor.