# How do you solve for x: in #2^x + 2^-x = 5/2#?

##### 1 Answer

May 14, 2016

#### Explanation:

(I'm hoping that someone will come up with a better method of solving, since the following is simply "solution by observation").

We are told:

Observe that

So

which implies

**Graph**

Another possible way is looking at a graph