# How do you simplify #sqrt(1+9x^4)#?

##### 1 Answer

Aug 8, 2015

That's about as simple is it can be.

You can factor the radicand as

but there are no square factors to allow simplification.

#### Explanation:

If the radicand of a square root has a square factor, then you can move that outside the square root.

For example,

With variables you have to be a little more careful, but you can say:

In the case of

We can factor the radicand to get:

but I would not call that simpler.