# How do you simplify #x^3 + x^4#?

##### 1 Answer

You can not simplify this expression!

See 'discussion'

#### Explanation:

You can not add these directly as they have different values rather than being counts of the same value; as you would get in

The only case when you could add them is if

As

This particular idea about adding zeros is perhaps a falsehood as: how can you add nothing to nothing. Adding in one sense means 'put with' or 'combine'. As this usually results in a change in total value, no value change has occurred!

The only way to change this is to factor out as many

However, I view this as making it more complicated so I suggest:

You can not simplify this expression!

On the other hand; if you knew what