June 2022 1 4 Report
Oblicz wartości liczbowe sum (najpierw zredukuj wyrazy podobne):


a) 2a+3-a+6+7a dla a = -2
b) 2z+t-3z+4t-1 dla z = 5 i t = 0,1
c) 13x-2y+7-9x+y-4+x-3 dla x=0,2, y= -1
d) n do kwadratu +n-7+3n do kwadratu-n-9-n+16 dla n= minus jedna-druga

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