MELIAH
Answered

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)

Sagot :

CLOCLO2

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