Bonjour,
A = (3⁵ × 3) / 3⁴ = (3⁵ × 3¹) / 3⁴ = 3⁵⁺¹ / 3⁴ = 3⁵⁺¹⁻⁴ = 3² = 9
B = 5⁻¹ / (5⁻² × 5³) = 5⁻¹ / 5⁻²⁺³ = 5⁻¹⁻⁽⁻²⁾⁻³ = 5⁻²
A/B = 9 / 5⁻² = 9 / (1/5²) = 9 × 5² = 225
