Zapisz w jak naprostrzej postaci :
(x-2)-(2-x)=
(a+b)+(2a-b)-(a-2b)=
(3x-y+1)-(x+y)+(y-x)=
-(2a[kwadrat]-3ab)-(2b-3a[kwadrat])+(-ab-b)=
(4x[kwadrat]-3x)-(x+0,1x[kwadrat])-(x[kwadrat]-0,1x) =
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1= 0
2= 4a-2b
3= 3x -3y+1
4= -a<kwadrat>-4ab-b
5= 4x<kwadrat> reszta sie wyzeruje