How do you solve x^3-2x^2-x+2=0?

1 Answer
Binayaka C.
May 2, 2016

x=2 ; x=1; x=-1

Explanation:

x^3-2x^2-x+2=0 or x^3-x^2-x^2+x-2x+2=0 or x^2(x-1)-x(x-1)-2(x-1)=0
or (x^2-x-2)(x-1)=0 or (x^2+x-2x-2)(x-1)=0 or (x(x+1)-2(x+1))(x-1)=0 or
(x-2)(x+1)(x-1)=0 :. x=2 ; x=1; x=-1[Ans]

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