5xkwadrat y+1/ykwadrat dla x=pierw z 2 y= -0,5
5/2 (kwadrat)-0,5+1:-0,5(kwadrat)=10-0,5+1:0,25=9,5+4=13,5
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5/2 (kwadrat)-0,5+1:-0,5(kwadrat)=10-0,5+1:0,25=9,5+4=13,5