## Algebra: A Combined Approach (4th Edition)

72 = 2 $\times$ 2 $\times$ 2 $\times$ 3 $\times$ 3
Write the prime factorization of 72. 72=2 $\times$ 36 72=2 $\times$ 2 $\times$ 18 72=2 $\times$ 2 $\times$ 2 $\times$ 9 72=2 $\times$ 2 $\times$ 2 $\times$ 3 $\times$ 3