Question

What is the prime factorization of 45?

2×3×3

3×3×5

5×9

2×2×3×3

Answer 1

Answer B. 3×3×5 (or 3^2*5)

To prime factorize a number divide the number for the lowest divisor.

45 | 3
15 | 3
5 | 5
1

Answer 2

3 x 3 x 5 because the product of 3x3x5 is 45