# How do you simplify 5sqrt2 + 4sqrt2?

Jul 18, 2016

$5 \sqrt{2} + 4 \sqrt{2} = 9 \sqrt{2}$

#### Explanation:

This is exactly like $5 x + 4 x = 9 x$

Both terms contain $\sqrt{2}$.

Just add how many $\sqrt{2} '$ s there are..

$5 \sqrt{2} + 4 \sqrt{2} = 9 \sqrt{2}$