To find the prime factorization of each number, start with any two factor pairs and keep factoring until each factor is prime.
32
2 x 16
2 x 2 x 8
2 x 2 x 2 x 4
2 x 2 x 2 x 2 x 2
48
2 x 24
2 x 2 x 12
2 x 2 x 2 x 6
2 x 2 x 2 x 2 x 3
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48 is even, so it can't be prime. The only even prime number is 2. The prime factorization of 48 is 2 x 2 x 2 x 2 x 3.
-32 = -25The only prime factor of -32 is 2. Negative numbers can't have prime factorizations.
The prime factorization of 576 is: 26 x 32 = 576
900 = 22 * 32 * 52
72 = 23 × 32