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break it up. 45 times 4 is 180. break 45 up. 15 times 3. three is prime. break up 15. 3 times 5. three is prime and so is 5.break up 4. 2 times 2.the prime factorization of 180 is 2 to the second power times 3 to the second power times 5.

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13y ago

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