Svp :X=fois x=x comment y la lettre A=4+(x-3)X5 B=2x(x+1)-x C=-(4-x)X2 D=3fois(5xX2)+4 E=3Xx+xX2x+3X4+2xX4 MERCI!!

Bonjour

A=4+(x-3)X5

A = 4 + 5x -15

A = 5x -11

B=2x(x+1)-x

B = 2x^2 + 2x-x

B = 2x^2 + x

C=-(4-x)X2

C = -(8 -2x)

C = -8 + 2x

D=3fois(5xX2)+4

D =3(10x) + 4

D = 30x + 4

E=3Xx+xX2x+3X4+2xX4

É = 3x + 2x^2 + 12 + 8x

É = 2x^2 + 11x + 12

Réponse :

Explications étape par étape

Bonjour

A=4+(x-3)* 5

A = 4 + 5x - 15

A = 5x - 11

B=2x(x+1)-x

B = 2x^2 + 2x - x

B = 2x^2 + x

C=-(4-x)*2

C = -8 + 2x

D=3*(5x*2)+4

D = 30x + 4

E=3*x+x*2x+3*4+2x*4

E = 3x + 2x^2 + 12 + 8x

E = 2x^2 + 11x + 12