Sagot :
Réponse:
A= 2(3x +5)
= 6x + 10
B = 3( X + 4) - 2(X -2)
= 3x + 12 - 2x +2
= X + 14
C = (2x - 4)(3x +5)
= 6x² + 10x -12x -20
= 6x² -2x -20
bonjour.
Explications étape par étape:
A.2(3x+5)
.6x+10
B.3(x+4)-2(x+1)
.3x+12-2x-2
.3x-2x+12-2
.x+10
c.(2x-4)(3x+5)
.6x²+10x-12x-20
6x²-2x-20