September 2018 1 18 Report
PILNEE!!!

1) Rozwiąż:
2x-y=3
4(x+y)=x-y+11

(najlepiej metodą podstawiania)

2) Oblicz y:

m=2xy/x+y

3) Oblicz:
5/8+7/4-9/4 /(kreska ułamkowa)2,2-9/2 :5,5

4) (x-1) do kwadratu -1= (x+1) do kwadratu +1
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