### 2.23.2 Expand exponentials : `expexpand`

`expexpand` takes as argument an expression with exponentials.

`expexpand` expands this expression (rewrites exp of sums as
product of exp).

Input :

`expexpand(exp(3*x)+exp(2*x+2))`

Output :

`exp(x)``^`

`3+exp(x)``^`

`2*exp(2)`