zad1
a)[2^-1+(1/2)^2 -2^-3]*2^-1=.............. (^ znaczy do potęgi //// * znaczy razyy
)
b) (0,8 - 5/13 * 0,13):(2/3)^-3 =........
c)[(-4)^2 :1,6-6] ^-2-...................
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a) [2^-1+(1/2)^2 -2^-3]*2^-1=[1/2 + 1/4 -1/8]*1/2=5/8*1/2=5/16
b) (0,8 - 5/13 * 0,13):(2/3)^-3 =27/500 :(2/3)^-3
c) [(-4)^2 :1,6-6] ^-2=[-8 : 1,6 - 6]^-2= -11^-2= -11^-2