# How do you factor #x^4 – y^4#?

##### 2 Answers

Jul 22, 2018

#### Explanation:

Expression

Recall the factorization of the difference of two squares:

In our example, we will use this factorization twice.

Note:

Applying the factorization above:

Expression

Now, the second factor above is also the difference of two squares.

Hence, Expression

Jul 22, 2018

#### Explanation:

Given that