# How do you simplify sqrt18-sqrt2?

Nov 5, 2015

$2 \sqrt{2}$

#### 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 $3 \sqrt{2}$.

Now we have $3 \sqrt{2} - \sqrt{2}$ which would just equal $2 \sqrt{2}$ using simple subtraction.