bonjour
a x a x a = a ³
a x a = a²
a = a¹
a ⁰ = 1
a ⁻¹ = 1 /a
5⁷ / 5 ⁴ = 5 ³ = 125
5 ⁶ / 5 ⁴ = 5 ² = 25
5 ⁴ / 5 ⁴ = 5 ⁰ = 1
5 ⁴ / 5 ⁶ = 5 ⁻² = 1 /25
2 ⁻² = 1/2² = 1/4
2 ⁻³ = 1 /2 ³ = 1 /8
5 ⁻² = 1 /5² = 1/25
7 ⁶ /7 ¹⁰ = 7/⁻⁴
3⁸ / 3⁵ = 3 ³
12¹⁵ / 12 ¹⁹ = 12 ⁻⁴
12¹⁵ / 12 ¹⁵ = 12 ⁰