December 2018 1 40 Report
Średnia arytmetyczna liczb a i b to:
a)a+ b
b)a-b
c)a+b/2
d)a-b/2
Które z wyrażeń algebraicznych nazwiemy iloczynem?
a)3x+1/2y
b)2(x-y)
c)x+y/2
d)x-3y

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