Réponses

2014-03-30T17:53:23+02:00
Bonsoir

A = 7/15 - 2/15 x 9/4
A = 7/15 - 18/ 60
A = 28/60 - 18/60
A = 10/60 = 1/6

B = 25 x 3 x 10³ sur 2 x 10²
B = 75 x 10³ sur 2 x 10²
B = 37.5 x 10
B = 3.75 x 10² = 375

C = 3√72 - 5√2
c = 18√2 - 5√2 = 13√2
13√2 = 25.456