Question

What is the square root of 7056?

Answer 1

`84`

Explanation:

-Write down the factors of `7056` and and see if they share the same with the choices.
- For example, if you see `83` and `85`, you can tell that there is no factor of `83` or `5` in `7056` since they are prime number and eliminate them.
- At this time you verify one by multiplying `84xx84` to verify.

Recheck:

`84xx84=7056`