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A. -9,85+3,4 = -6,45
B.-5,8-7,35 = -13,15
C.-3,7-(-9,5) = -3,7+9.5=5,8
D.4,5-6,25=1,75
Zad.2 D
A.(-3,7)do potęgi 2 = 13,69
B.(-7,6)x(-3) = 22,8
C.(-4,8):(-2) = 2,4
D.(-3,1)x(9)do potęgi 2= -3,1*81= - 251,1
Zad. 3
C.-5,05