Factoring - The Factor Tree
The prime factorization of 18 is
Correct.
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The factor tree is
Therefore, the factorization of 18 is $$18 = 2\cdot9 = 2\cdot3\cdot3$$.
Therefore, the factorization of 18 is $$18 = 2\cdot9 = 2\cdot3\cdot3$$.Incorrect.
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$$2\cdot9$$ does equal 18, but 9 is not prime. This is a good first step though. Now you just need to factor 9.
Incorrect.
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This is the prime factorization of 12, not 18.
Incorrect.
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$$3\cdot6$$ does equal 18, but 6 is not prime. This is a good first step though. Now you just need to factor 6.
$$2\cdot9$$
$$2\cdot2\cdot3$$
$$3\cdot6$$
$$2\cdot3\cdot3$$
