Réponse :
Explications étape par étape
bonsoir
a = 8 x 10 ¹⁰
b = 7.2 x 10 ⁻³
c = 16 x 10 ¹⁰ = 1.6 x 10 ¹¹
d = 37.5 x 10 ⁻³ = 3.75 x 10 ⁻²
e = 20.4 x 10 ⁻⁷ 2.04 x 10 ⁻⁶
f = 30.15 x 10 ⁹ = 3.015 x 10 ¹⁰
(9.5 x 10 ⁶ ) / 2 = 4.75 x 10 ⁶
(5.7 x 10 ⁻⁴) / 3 = 1.9 x 10 ⁻⁴
15 : ( 5 x 10 ⁴) = 3 x 10 ⁻⁴
18 : ( 4 x 10 ⁻⁵) = 4.5 x 10 ⁵
( 45 x 10 ⁶) / ( 9 x 10 ²) = 5 x 10 ⁴
( 27 x 10 ⁻³) / (6 x 10 ⁴ ) = 4.5 x 10 ⁻⁷
