Question

using prime factorization find 284 is a perfect sqaure ​

Answer 1

Answer:

What is the last number of 284? It is this number: 284. The answer is 4. ...

2 + 8 + 4 = 14. If the answer is more than one digit, you would add each digit of the answer together again: 1 + 4 = 5. ...

So now we know the digital root of 284 is 5.