bonsoir
a ⁵ x a ⁶ = a ¹¹
a ³ x a ¹⁰ = a ¹³
a² x a ³ x a ⁴ = a ⁹
( a x b ) ³ = a ³ x b ³
( a x b ) ⁴ = a ⁴ x b ⁴
(a⁹)² = a ¹⁸
