- #1
bonfire09
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Homework Statement
Find the ##gcd(x^3+x^2-x, x^5+x^4+2x^2-x-1) ##and write it as a linear combination.
Homework Equations
The Attempt at a Solution
I know the ##gcd(x^3+x^2-x, x^5+x^4+2x^2-x-1)=1## What I have so far is ##1. x^5+x^4+2x^2-x-1=(x^3+x^2-x)(x^2+1)+(x^2-1)## ##2. x^3+x^2-x=(x^2-1)(x+1)+1 ##. I tried back substituting but it can't seem to work. The division is correct.