Oblicz wartości każdego wyrażenia i wpisz ją w lukę.
a)-2/5²x(-5)³+(-1)⁵=
b) (-2)⁴+(-1,4)²×(-10)³=
c) (2-3/5)²×5²-(-7)²=
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a) =-2/25 • (-125)+1 = 250/25+1=10+1=11
b) =16+1,96•(-1000)= 16-1960= -1944
c) = (4-12/5+9/25) •25-49=100-60+9-49= 0