Réponses

  • Omnes
  • Modérateur confirmé
2014-03-03T21:56:14+01:00
Salut,

1:

Dans l'ordre, ligne par ligne, de gauche à droite:

S, P, S, S, P, P, S, S, P, S, S, S

2:

a. 13 * 4.5 + 4.5 * x = 13 * 4.5 + 4.5 * x
b. 5x - 4x + 3x = 5 * x - 4* x + 3 * x
c . 7a + a² - 6a = 7 * a + a * a - 6 * a
d. 9y² - 6y + 3y = 6y * y - 6 * y + 3 * y
e. 12x² + 6x + 18 = 2x² * 6  + x * 6 + 3 * 6
f: -2n² - 4n - 6 = 2 * (-n²) + 2 * (-2n) + 2 * (-3)
g: 1.7y² - 3.4y = 1.7y * y - 1.7y * 2

3:

A = 16 * 4.7 - 6 * 4.7
A = 4.7(16 - 6)

B = 6y - 18
B = 6 * y - 3 * 6
B = 6(y-3)

C = 25m - 15
C = 5 * 5m - 5 * 3
C = 5(5m-3)

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

E = 4a² + 3a
E = a*4a + a*3
E = a(4a + 3)

F = 2t² + t
F = t * 2t + t *1
F = t(2t + 1)

4:

A = 4+5x = 4+5x
B = 4*5x = 20x
C = 4x * 5 = 20x
D = 4x + 5x = 9x
E = 4x * 5x = 20x²
F = 4-5x = 4-5x
G = 4x - 5x = -x

Bonne soirée !