devloper, puis simplifier les expressions suivantes: a= -5(x+2) b= -3(x-2) c= x(x+3) d= x(4-x) e= -3x(x+4) f= 2x(x-7) g= 6x(2x+1) h= -4x(5x-10) Merci enfiniment

Bonjour,

a= -5(x+2)

= -5*x - 5*2

= -5x - 10

b= -3(x-2)

= -3*x + 3*2

= -3x + 6

c= x(x+3)

= x*x + x*3

= x² + 3x

d= x(4-x)

= x*4 - x*x

= 4x - x²

e= -3x(x+4)

= -3x*x -3x*4

= -3x² - 12x

f=2x(x-7)

=2x*x -2x*7

=2x² -14x

g=6x(2x+1)

=6x*2x +6x*1

=12x² +6x

h= -4x(5x-10)

=-4x*5x +4x*10

=-20x² + 40x.

Réponse :

Explications étape par étape

Bonjour

Devloper, puis simplifier les expressions suivantes:

a= -5(x+2)

A = -5 * x - 5 * 2

A = -5x - 10

b= -3(x-2)

B = -3 * x - 3 * (-2)

B = -3x + 6

c= x(x+3)

C = x * x + x * 3

C = x^2 + 3x

d= x(4-x)

D = x * 4 - x * x

D = 4x - x^2

e= -3x(x+4)

E = -3x * x - 3x * 4

E = -3x^2 - 12x

f= 2x(x-7)

F = 2x * x - 2x * 7

F = 2x^2 - 14x

g= 6x(2x+1)

G = 6x * 2x + 6x * 1

G = 12x^2 + 6x

h= -4x(5x-10)

H = -4x * 5x - 4x * (-10)

H = -20x^2 + 40x