Bonjour,
10⁻³ = 1/10³ = 1/1000 = 0,001
(-3)⁻⁴ = 1/(-3)⁴ = 1/81
7⁻² = 1/7² = 1/49
-3⁻² = -1/3² = -1/9
5⁻¹ = 1/5¹ = 1/5 = 0,2
2⁻⁴ = 1/2⁴ = 1/16 = 0,0625
(3/2)⁻² = 1/(3/2)² = 1/(9/4) = 4/9
(2/5)⁻¹ = 1/(2/5) = 5/2 = 2,5
(4/3)⁻³ = 1/(4/3)³ = 1/(64/27) = 27/64 = 0,421875
