August 2018 2 24 Report
Doprowadz wyrażenie do najprostszej postaci
a) (x+3)-(x-1)=
b) (3a-2b)³-(a+2b)³-(a-b)(a+b)=

Rozwiąż równanie oraz układy równań
a) 4(x-3)-(x+1)(x-1)=5(x-1)-(x+3)²-2
b) ⅔x+2y=1
c) ½x-¼y=-1

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