September 2018 1 13 Report

1.Oblicz wartość liczbową wyrażenia ; 8a³-4a²+2 a= -¼

2.Oblicz [(x-4)*3+ x/2 ] *2:5

3.Wykonaj działanie ; 10a²b+(-2½a²b+½ab²)-(7,5a²b-ab²)

4.Doprowadź do najprostszej postaci ; 12x(0,5x²-¼y)-15y(-⅓x+0,2y²)-2xy=

/-kreska ułamkowa.


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