Question

How do you write the prime factorization of 392?

Answer 1

{2,7}

Explanation:

try to divide with prime numbers starting from 2 and the result shall be no remainder..

`1. 392/2 =196`

`2. 196/2 = 98`

`3. 98/2 = 49`

`4. 49/7 = 7`
3 and 5 cannot take a consideration because 49 unable to divide with these numbers with result without remainder..

The answer is {2,7}

Answer 2

Prime factors are `2^3` and `7^2`

Explanation:

If you can commit the first few prime numbers to memory you would find it a worth wile task. If you do a google search in images and you will soon get a comprehensive list. All the prime factors up to 101 would be good.

`color(blue)("Using a prime factor tree")`