SOLUTION: this is a four answer question. I found one of the answers by just guessing but I don't know how the operations work on a problem like this so can someone please eplain this to me?

You can put this solution on YOUR website!
Solve:
This can be factored by treating the x^4 as (x^2)^2.

Apply the zero products principle.
and/or
If , then and or
If , then and or
The four roots are:
x = -1
x = 1
x = -3
x = 3
So, in increasing order, we have:
x1 = -3
x2 = -1
x3 = 1
x4 = 3

You can put this solution on YOUR website!
Thank you.