Question 513729

{{{x^3-2x^2-x+2=0}}}....group first two and second two terms


{{{(x^3-2x^2)-(x-2)=0}}}


{{{x^2(x-2)-(x-2)=0}}}


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


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


solutions:

if {{{(x-1)=0}}}....->....{{{x=1}}}

if {{{(x+1)=0}}}....->....{{{x=-1}}}

if {{{(x-2)=0}}}....->....{{{x=2}}}


see them on a graph:

{{{ graph( 500, 500, -10, 10, -10, 10, x^3-2x^2-x+2) }}}