bonjour
A = 0.00005 = 5 * 10 ⁻⁵
B = 3.2 x 10 ⁷
5 ⁰ = 1
10 ¹ = 10
10 ⁻³ = 0.001
A = 15 x - 10 x² + 6 - 4 x = - 10 x² + 11 x + 6
B = - 2 x² - 2 x /2 = - 2 x² - x
3 x² - 2 x = x ( 3 x - 2 =
( x + 2) ( 3 + x ) - ( x + 2) ( 3 - 2 x ) = ( x + 2 ) ( 3 + x - 3 + 2 x ) = ( x + 2) ( 3 x )
( 3 x - 1)² = 9 x² - 6 x + 1
x² - 9 = ( x + 3) ( x - 3 )
5) pas de fonction
6) proba blanche = 3/ 10
proba chiffre ≥ 3 = 8/10 = 4/5
