August 2018 1 16 Report
1/3(jedna trzecia)a(a+1)-4(1/3a3-1/12a)-a(1-a)=
1/2a(a+1)-2(a2/a/2)= tu gdzie a2/4-a/2 to bedzie te 4 i te 2 pod kreska ułamkowa)
8x(x+y)+2y(y-x)+1/2(6x2+8y2)-2(y2+xy)=


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