oblicz
a) ½*2°-3 do potęgi -2 =
b) w kwadratowym nawiasie ⅔ (⅔ do potęgi minus 2 zamknąc kwadratowy nawias i do potęgi 0
c) ( 3/7) do potęgi 2 ÷( 9/49)do potęgi minus 2
d ) (½) do potęgi minus 2×(⅔)do potegi minus 2
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oblicz
a) ½*2°-3 do potęgi -2 =
= ½*1 - 3⁻² =
= ½ - (⅓)² =
= ½ - (1/9) =
=( 9/18) - (2/18) =
= 7/18
b) w kwadratowym nawiasie ⅔ (⅔ do potęgi minus 2 zamknąc kwadratowy nawias i do potęgi 0
[ ⅔(⅔)⁻²]⁰ =
= [ ⅔*(3/2)²]° =
= [ ⅔*(9/4) ]° =
= (3/2)° =
= 1
c) ( 3/7) do potęgi 2 ÷( 9/49)do potęgi minus 2 =
= (3/7)² : (9/49)⁻² =
= (3/7)² : (49/9)² =
= [(3/7) :(49/9) ]² =
= [ (3/7)*(9/49) ]² =
= (27/343)² =
= [(3/7)³]² =
= (3/7)⁶
d ) (½) do potęgi minus 2×(⅔)do potegi minus 2 =
=(½)⁻² *(⅔)⁻² =
= [ (½)*(⅔) ]⁻² =
= (⅓ )⁻²
= 3² =
= 9