Oblicz:
(2^-5*2^-3 : 2^-7) ^-2=
(2^-5 * 2^-3 : 2^-7) ^-2= 2^[-5 + (-3) - (-7)]^(-2) = 2^(-8 + 7)^(-2) = [2^(-1) ]^(-2) = 2^(-1 * (-2)) = 2^2 = 4
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(2^-5 * 2^-3 : 2^-7) ^-2= 2^[-5 + (-3) - (-7)]^(-2) = 2^(-8 + 7)^(-2) = [2^(-1) ]^(-2) = 2^(-1 * (-2)) = 2^2 = 4