27 = 3³ ; 9 =3² ; 32 = 2⁵ ; 8 = 2³
a) ( 3³ ) ⁵ : ( - 3² ) ⁶ = 3 ¹⁵ : 3¹² = 3 ¹⁵⁻ ¹² = 3³
b ) ( - 2 ⁵ ) ⁵ : [ ( -2 ) ³ ]⁶ : ( -2 ) ² = ( - 2) ²⁵ ⁻ ¹⁸ ⁻ ⁴ = ( - 2 ) ³ = - 2³
c) ( - 7 ³ ) ⁷ · 7 ²³ : ( - 7 ² ) ²¹ = - 7 ²¹ · 7 ²³ : 7 ⁴² = - 7 ²¹ ⁺ ²³ ⁻ ⁴² = - 7 ²
d ) [( - 5 ) ²] ⁵ : ( 5 ³ ) ³ = 5 ¹⁰ : 5 ⁹ = 5 ¹⁰ ⁻ ⁹ = 5¹ = 5