Question

name date additional practice 4.18 for problems 1–4, represent the product as a multiplication expression using only its prime factors. 1 product: 32 2 product: 28 3 product: 45 4 product: 36 5 which multiplication expressions represent 60 using only factors? select all that apply.

Explanation:

Step1: 分解32为质因数

$32 = 2 \times 2 \times 2 \times 2 \times 2$

Step2: 分解28为质因数

$28 = 2 \times 2 \times 7$

Step3: 分解45为质因数

$45 = 3 \times 3 \times 5$

Step4: 分解36为质因数

$36 = 2 \times 2 \times 3 \times 3$

Step5: 分解60为质因数

$60 = 2 \times 2 \times 3 \times 5$

Answer:

1. $2 \times 2 \times 2 \times 2 \times 2$
2. $2 \times 2 \times 7$
3. $3 \times 3 \times 5$
4. $2 \times 2 \times 3 \times 3$
5. 符合要求的表达式为$2 \times 2 \times 3 \times 5$（若选项中有此式则为正确选项）