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Prime Factorization of 18:
\Express the composite number as a product of its prime factors.
\Draw the possible factor trees.
\ ![\"The](\"/userfiles/image/Library/Pre_Algebra/prime_factorization_tree_18.gif\")
The prime factorization of 18 is 2 · 3 · 3 or 21 · 32.
\Note: Both trees give same reuslt. Prime facots are unique to a particular number. ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The prime factorization of 18 is 2 · 3 · 3 or 21 · 32.