Liczba -8 do potęgi 2/3 wynosi:
( - 8)^⅔ = (∛-8)² = ( -2 )² = 4
(-8)^(2/3) = [ (-8)^2 ]^(1/3) = 64^(1/3) = ∛64 = ∛ (4³) = 4
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( - 8)^⅔ = (∛-8)² = ( -2 )² = 4
(-8)^(2/3) = [ (-8)^2 ]^(1/3) = 64^(1/3) = ∛64 = ∛ (4³) = 4