Sagot :
Réponse :
Explications étape par étape
Bonjour
Développer les expressions suivantes :
A = 3(x + 5)
A = 3 * x + 3 * 5
A = 3x + 15
B = 5(6 - x)
B = 5 * 6 - 5 * x
B = 30 - 5x
C = 10(3 + x)
C = 10 * 3 + 10 * x
C = 30 + 10x
D = 7(x - 3)
D = 7 * x - 7 * 3
D = 7x - 21
E = 4(2x + 3)
E = 4 * 2x + 4 * 3
E = 8x + 12
F = 2(5x - 9)
F = 2 * 5x - 2 * 9
F = 10x - 18
Réponse:
A = 3x + 3×15
= 3x + 15
B = 5×6 + 5× -x
B = 30 - 5x
C = 10 × 3 + 10 × x
C = 30 + 10x
D = 7 × x + 7 × -3
D = 7x -21
E = 4 × 2x + 4 × 3
E = 8x + 12
F = 2 × 5x + 2 × -9
F = 10x - 18