Question

How do you simplify `sqrt18-sqrt2`?

Answer 1

`2sqrt(2)`

Explanation:

You can simplify `sqrt(18)` using a tree diagram.

Below is a shoddily made tree diagram

.18
2 9
2 3 3

And that will simplify to `3sqrt(2)`.

Now we have `3sqrt(2) - sqrt(2)` which would just equal `2sqrt(2)` using simple subtraction.