Question

How do you simplify `(3- \sqrt{57} )^{2}`?

Answer 1

Here it is expanded, I don't know that it is really simpler:

`=66-6sqrt57`

Explanation:

`=(3- \sqrt{57} )^{2}`

`=(3-sqrt57)(3-sqrt57)`

`=9-6sqrt57 + 57`

`=66-6sqrt57`