Answered

Developper et reduire :
A (x)=7(x+2)
B(x)=-4(5x-3)
C(x)=(x+2)(x-5)

Sagot :

A (x)=7(x+2)=7Xx + 7X2=7x +14
B(x)=-4(5x-3)= -4X5x +4X3= -20x +12
C(x)=(x+2)(x-5)=xXx + xX(-5) + 2Xx +2X(-5)=x²+(-5x)+2x-10

X= fois