Réponses

2014-10-15T11:49:44+02:00
Bonjour

A = 2 x (- 3 +2) = 2 x -1 = - 2

b = 25 : ( - 0.5 - 2) = 25 : - 2.5 = - 10

c = (-50) x (0,00158) x 25 x -8
C =  -0, 079  x - 200
c = 15,8

D = ( 3,5 +2) x ( - 11) = 5,5 x -11 = - 60,5
2014-10-15T12:01:10+02:00
A= 2*[-3 -(-2)]
  = 2*[-3(+2)]
  = 2*(-1)
  = -2

B= 25/(-0,5 -2)
  = 25/(-2,5)
  = -10

C= (-50)*(0,0158)*25*(-4)*2
  = -0,79*25*(-4)*2
  = -19,75*(-4)*2
  = 79*2
  = 158

D= [3,5 - (-2)]*(-7 -4)
  = [3,5 (+2)]*(-7 -4)
  = 5,5 (-11)
  = -60,5