September 2018 1 19 Report
Przekształć iloczyny na sumy (to jest z podr. MATEMATYKA WOKÓŁ NAS, kl. I gim, zad.1 str. 157 [lub ew. 152])

a) 3(a-2)=
b) -4(x+y)=
c) -5(-x+1)=
d) -3a(⅓-a)=
e) (t-2s-1)×7=
f) ½(2a-4b+1=
g) m(2m+3)=
h) 3p(2r+5p-1)=
i) xy(2x-3y+5)=
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