Question

How do you simplify `sqrt7*sqrt7`?

Answer 1

`7`

Explanation:

Use properties of square roots first:

`sqrt(7)*sqrt(7)=sqrt(7*7)`

Then simplify within the square root:

`sqrt(7*7)=sqrt(49)`

Then take the square root of `49` (what number times itself is `49`?):

`sqrt(49)=7`