En utilisant l'identité "k(a+b)=ka+kb",DEVELOPPER LES EXPRESSIONS SUIVANTES:
A= 7(x+4)
B= 4(3-2x)
C= -3(x+7)
D= -5(3x-2)
E= -2x(5+4x)
A = 7(x + 4)
A = 2x + 28
B = 4(3 - 2x)
B = 12 - 8x
B = -8x + 12
C = -3(x + 7)
C = -3x - 21
D = -5(3x - 2)
D = -15x + 10
E = -2x(5 + 4x)
E = -10x - 8x²
E = -8x² - 10x