bonjour
A = 7 ⁸ / 7 ¹⁵ = 7 ⁻⁷
B = ( 3/5)⁷ x 5 ⁵ x 3 ⁻⁵ = 3⁷ : 5 ⁷ x 5 ⁵ x 3 ⁻⁵ = 3 ⁷ x 5 ⁻⁷ x 5 ⁵ x 3 ⁻⁵ = 3 ² x 5 ⁻²
C = 16 x 2 ⁹ = ( 2 ²) ² x 2 ⁹ = 2 ⁴ x 2 ⁹ = 2 ¹³
27 ⁶ x 3 ⁷ : 9 ⁸ = ( 3 ³)⁶ x 3 ⁷ : ( 3 ²) ⁸ = 3 ¹⁸ x 3 ⁷ : 3 ¹⁶ = 3 ²⁵ : 3 ¹⁶ = 3 ⁹
E = 4 ⁶ / 2 ⁴ + 2 / 2 ⁻⁷ = 2 ¹² / 2 ⁴ + 2 / 2 ⁻⁷ = 2 ⁸ + 2 ⁻⁶
F = 3 ²⁸ / 2 ²⁸ x 5 ²⁸ = 3 ³⁸ / 10 ²⁸ = 0.3 x 10 ²⁸ = 3 x 10 ²⁹
