Bonjour besoin d’aide pour ces exercices svp Exercice 16 : On donne M = -3 x m + 5 x p - 1.Calculer M pour : a) m = p = 2 b) m = 2 et p = -2 c) m = - 2 et p = 2

Réponse :

Explications étape par étape

Bonjour

Exercice 16 :

On donne M = -3 x m + 5 x p - 1.Calculer M pour :

a) m = p = 2

M = -3 x 2 + 5 x 2 - 1

M = -6 + 10 - 1

M = 10 - 7

M = 3

b) m = 2 et p = -2

M = -3 x 2 + 5 x (-2) - 1

M = -6 - 10 - 1

M = -17

c) m = - 2 et p = 2

M = -3 x (-2) + 5 x 2 - 1

M = 6 + 10 - 1

M = 16 - 1

M = 15

d) m = p = -2

M = -3 x (-2) + 5 x (-2) - 1

M = 6 - 10 - 1

M = 6 - 11

M = (-5)

Exercice 17 :

On donne P = (-3s + 6 ) x (7 - s).Calculer P pour :

a) s = 2

P = (-3 x 2 + 6 ) x (7 - 2)

P = (-6 + 6) x 5

P = 0

b) s = 7

P = (-3 x 7 + 6 ) x (7 - 7)

P = (-21 + 6) x 0

P = 0

d) s = -5

P = (-3 x (-5) + 6 ) x (7 - (-5))

P = (15 + 6)(7 + 5)

P = 21 x 12

P = 252

e) s= 12

P = (-3 x 12 + 6 ) x (7 - 12)

P = (-36 + 6) x (-5)

P = (-30) x (-5)

P = 150