Use prime factors to determine the HFC of 90 and 126
2 answers:
Highest common prime factor is three
Answer:
Step-by-step explanation:
Comment
The question means that you are to break both numbers down in to prime factors. When you do, what do the numbers have in common
90: 2 * 3 * 3 * 5
126: 2 * 3 * 3 * 7
The bolded numbers are the primes in common
Primes in common (answer): 2 * 3 * 3 = 18
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