# How do I use a graphing calculator to find the complex zeros of #x^4-1?#

##### 1 Answer

You can't easily find complex zeros from a graphing calculator. See answer below.

Complex zeros:

#### Explanation:

Given:

Graph of the function:

graph{x^4 - 1 [-5, 5, -5, 5]}

You can't find complex zeros from a graphing calculator, but you can find the real zeros and then use synthetic division or long division to find the complex zeros:

The graph shows that there are zeros at

Using synthetic division put the values in the following order:

These values represent

2nd division of

These values represent

The complex zeros come from

Complex zeros: