# How do you solve #u^4 = 1#?

##### 3 Answers

#### Explanation:

Our equation is essentially a difference of squares which can be rewritten as

To solve, we can set both of these equal to zero to get

Therefore, our solutions are

Hope this helps!

Given ** #4#th degree equation** will have

**four roots**:

#### Explanation:

Given equation: ** #4# roots** as follows

Where,

Now, setting the values of

hence, all four roots are

Answer below