bonsoir,
A = 12 ⁵ x 9
= ( 3 x 2²) ⁵ x 3 ²
= 3 ⁵ x 2 ¹⁰ x 3 ² = 2 ¹⁰ x 3 ⁷
B = 18 ⁻² x 48 ⁴
= ( 2 x 3²) ⁻² x ( 3 x 2⁴ ) ⁴
= 2 ⁻² x 3 ⁻⁴ x 3 ⁴ x 2 ¹⁶
= 2 ¹⁴ x 3 ⁰
= 2 ¹⁴ x 1
C = 8 ⁻³ x 24 /54 x 4 ³
= ( 2 ³) ⁻³ x [ (3 x 2³ ) / ( 2 x 3 ³) x ( 2²) ³
= 2 ⁻⁹ x ( 2 ² / 3 ⁻²) x 2 ⁶
= 2 ⁻¹ / 3 ⁻²
D = 243 / 512
D = ( 2 x 3 ⁴) / 2 ⁸
= 2 ⁻⁶ x 3 ⁴
