ALLANYORDIKIAN23
Answered

Exercice 3:
Calculer les expressions suivantes pour en détaillant toutes les étapes du calcul:
a = -2; b = +3;C = -1 et d = + 1
A = a + b + C +d; B = a - b +c-d; C = -a + b - C-d;
D = - (a + b) + (c + d);
E = - (a - b) - (c- d); F = (a - b) + (c- d)
svp aidez moi​

Sagot :

ZAHIHANAA102

bonjour,

A=a+b+c+d

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

=-2+3-1+1

= 1

B=a-b+c-d

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

=-2-3-1-1

=-7

C=-a+b-c-d

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

=2+3+1-1

=5

D=-(a+b)+(c+d)

=-a-b+c+d

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

=2-3-1+1

=-1

E=-(a-b)-(c-d)

=-a+b-c+d

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

=2+3+1+1

=7

F=(a-b)+(c-d)

=a-b+c-d

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

=-2-3-1-1

=-7