Question

How do you simplify `sqrt7(3-sqrt7)`?

Answer 1

`3sqrt(7)-7`

Explanation:

`color(red)(sqrt(7))(3-sqrt(7))`

by distribution
`color(white)("XXX")=color(red)(sqrt(7))*3 - color(red)(sqrt(7))*sqrt(7)`

`color(white)("XXX")=3sqrt(7)-7`