# How do you evaluate #2sqrt3-4sqrt2#?

##### 1 Answer

Mar 24, 2018

There is no way to evaulate this without a calculator because

#### Explanation:

To add or subtract radicals, the radicals must be simplified and can only be added when they have a common radical. Just like you can only combine like terms in algebra, you can only combine like radicals. Read this for more information.