Bonjour pouvez vous m'aider svp

Réponse :

Salut,

B = 4a + 5b - 56

= 4 × 3 + 5 × 5 - 56

= 12 + 25 - 56

= 37 - 56

= -19

C = a³ + b² + 7ab

= 3³ + 5² + 7 × 3 × 5

= 27 + 25 + 21 × 5

= 27 + 25 + 105

= 157

D = 2(5a + 3b + 1)

= 2 × (5 × 3 + 3 × 5 + 1)

= 2 × (15 + 15 + 1)

= 2 × 31

= 62