Question

How do you simplify `sqrt45 + 2 sqrt5`?

Answer 1

`5sqrt5`

Explanation:

You are looking for squared values that you can 'take outside' the root. Note that `45=5xx9=5xx3^2`

Write as: `sqrt(5xx3^2)+2sqrt5`

`3sqrt5+2sqrt5`

`5sqrt5`