The prime factorization of 45 is:
$$ 45 = 3\cdot3\cdot5 $$Which is the same as :
$$ 45 = 3^{2}\cdot5 $$Prime factorization can be nicely visualized by creating a factorization tree.
45 can be written as 5 × 9. |
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9 can be written as 3 × 3. |
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The end nodes are the prime factors of the number 45. |
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