Sagot :
Bonjour,
A=5(2+x)= 10+x
B=(x+3)x8 = 8x +24
c=4(3x+1) = 12x +4
d=7(x -2) = 7x-14
A=4(5x+2) = 20x +8
b=20(x+8) = 20x =160
c=(2x+5) x4 = 8x +20
d=(10x+4) x2 = 20x +8
Réponse :
Bonjour,
A = 5(2 + x)
= 5 * 2 + 5 * x
= 10 + 5x
B = (x + 3) * 8
= 8 * x + 8 * 3
= 8x + 24
C = 4(3x + 1)
= 4 * 3x + 4 * 1
= 12x + 4
D = 7(x - 2)
= 7 * x - 7 * 2
= 7x - 14
A = 4(5x + 2)
= 4 * 5x + 4 * 2
= 20x + 8
B = 20(x + 8)
= 20 * x + 20 * 8
= 20x + 160
C = (2x + 5) * 4
= 4 * 2x + 4 * 5
= 8x + 20
D = (10x + 4) * 2
= 2 * 10x + 2 * 4
= 20x + 8
Bon courage ^-^
