Explications étape par étape :
A = ( 1 / 3 )¹⁸ * 3²⁰
⇔ A = 3⁻¹⁸ * 3²⁰
⇔ A = 3⁻¹⁸⁺²⁰
⇔ A = 3²
⇔ A = 9
B = ( 2/3 )¹¹ * ( 3/2 )¹⁰
⇔ B = ( 3/2 ) ⁻¹¹ * ( 3/2 )¹⁰
⇔ B = ( 3/2 )⁻¹¹⁺¹⁰
⇔ B = ( 3/2 ) ⁻¹
⇔ B = 2/3
C = ( -5/11 )³ * ( 11/5 )⁴
⇔ C = ( -11/5 )⁻³ * ( 11/5 )⁴
⇔ C = - ( 11/5 )⁻³ * ( 11/5 )⁴
⇔ C = - ( 11/5 ) ⁻³⁺⁴
⇔ C = - 11/5
D = ( -3/4 )⁶ * ( 4/3 )⁵
⇔ D = ( -4/3 )⁻⁶ * ( 4/3 )⁵
⇔ D = ( 4/3 )⁻⁶ * ( 4/3 )⁵
⇔ D = ( 4/3 )⁻¹
⇔ D = 3/4