radomes.openskiesproject.org
kanjae kanjae
  • 03-04-2015
  • Mathematics
Answered

p(x) x^3+x^2-x-1


Find all zeros of p (x)

Verified Answer :

konrad509
konrad509 konrad509
  • 03-04-2015

\(x^3+x^2-x-1=0\\ x^2(x+1)-1(x+1)=0\\ (x^2-1)(x+1)=0\\ (x-1)(x+1)(x+1)=0\\ (x-1)(x+1)=0\\ x=1 \vee x=-1\)

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