Bonjour,
Exercice 1
a) (2/3)² = 4/9
b) 10⁵ = 100 000
c) -10⁴ = -10 000
d) 10⁻³ = 1/1000 = 0,001
e) (-10)⁻² = 1/100 = 0,01
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Exercice 2
a) 10⁻² × 10⁷ = 10⁻²⁺⁷ = 10⁵
b) 10⁻⁶/10⁻⁵ = 10⁻¹
c) 10⁻⁴ / 10⁴ = 10⁻⁸
d) (10³)⁴ = 10¹²
e) (10⁻² × 10⁻⁷) / 10⁶ = 10⁻⁹ / 10⁶ = 10⁻¹⁵
