kanjae kanjae
  • 03-04-2015
  • Mathematics
Answered

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

Find all zeros of p (x)

Answer :

konrad509
konrad509 konrad509
  • 03-04-2015
[tex]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[/tex]
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