$x-2$ parantezine alabilirsin.
$(x-1).(x+1).(x-2)=(x-2).(x+2).(x-3)$$(x-1).(x+1).(x-2)-(x-2).(x+2).(x-3)=0$$(x-2). [ (x-1).(x+1) - (x+2).(x-3)] = 0$$(x-2). [x^2-1 - x^2+x+6 ] = 0$$(x-2) . (x+5)=0$$x_1=2$ ve $x_2= -5$$Ç.K = (-5 , 2 )$