Question 701655
Hint:


g(x)=x^3-2x^2-x+2


0=x^3-2x^2-x+2


x^3-2x^2-x+2 = 0


(x^3-2x^2)+(-x+2) = 0


x^2(x-2)-1(x-2) = 0


(x^2 - 1)(x-2) = 0


(x-1)(x+1)(x-2) = 0