# How do you factor #a^4+2a^2b^2+b^8#?

##### 1 Answer

Apr 3, 2017

#### Answer:

That expression is prime.

#### Explanation:

If you are certain about the exponent on b in the middle term, that expression is prime. That is to say, it does not factor.

However,

For

the positive (principal) square root of

The middle term is twice the product of

Therefore we would have a Perfect Square Trinomial factoring as