Réponse :
Bonjour
Explications étape par étape
Exercice 32
a) 4 + (x-3) X 5
a = 4 +5x -15
a = +5x -11
b) 2x (x +1) -x
b = 2x² +2 -x
c = - (4 -x) X 2
c = (-4 +x) X2
c = -8 +2x
d = 3 X (5x X 2) +4
d = 3 X ( 10x) +4
d = +30x +12
e = 3 X x +x X 2x +3 X 4 +2x X 4
e = 3x +2x² +12 +8x
e = +2x² +11x +12