How to Determine Irreducible Polynomials in (Z/2Z)[x]?

silvermane
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Homework Statement


Find all monic polynomials of degrees 2 and 3 in (Z/2Z)[x]. Determine which ones are irreducible, and write the others as products of irreducible factors.



The Attempt at a Solution


I know that factors of degree 1 correspond to roots in Z/2Z and that monic polynomials are polynomials where the top term coefficient is equal to 1. I think I'm not understanding what I'm supposed to do, or how to write them via modulus.

Any hints or tips are greatly appreciated! :)
Please no answers!
 
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Here are the polynomials of dregree 2:


x²+1
x²+x
x²+x+1

Can you now find all the polynomials of degree 3? There are 8 of them.
 
So It's pretty much just combinations of functions with an X^2 for degree 2, and other terms such as x and 1 for the lesser degrees.

Furthermore, for x^3, we would have this:

x^3
X^3 +x^2
X^3 +x^2+x
X^3 +x^2+x+1
X^3 +x+1
X^3 +x^2+1
X^3 +1
X^3 +x

Thanks for your help!
I think I can handle it from here :)
 
Yes!

Good luck!
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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