3² * 2 = 9 * 2 = 18 ■
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2 times 3 to the second power equals to 2x9 or 18 2 to the second power times 3 equals to 4x3 or 12 therefore the least common factor is 2.
2 3 x 2 Three to the second power times two
It is correct only for the first one. The second one should be 3 to the power 2 times 2 times 5.
That's the prime factorization of 2100.
Is 4 a factor of 720