Bonsoir, pouvez vous m'aidez svp merci bonne soirée

Bonsoir,

F = - 3 * x * y

a) x = - 5 ; y = 7

F = - 3 * - 5 * 7

F = 15 * 7

F = 105

b) x = - 2 ; y = 4

F = - 3 * - 2 * 4

F = 6 * 4

F = 24

c) x = 4 ; y = - 2

F = - 3 * 4 * - 2

F = - 12 * - 2

F =  24

d) x = - 3 ; y = - 3

F = - 3 * - 3 * - 3

F = 9 * - 3

F = - 27

Bonjour

Calculer l’expression F = - 3 * x * y lorsque :

a) x = -5 et y = 7

F = -3 * (-5) * 7

F = 15 * 7

F = 105

b) x = -2 et y = 4

F = -3 * (-2) * 4

F = 6 * 4

F = 24

c) x = 4 et y = -2

F = -3 * 4 * -2

F = -12 * -2

F = 24

d) x = -3 et y = -3

F = -3 * -3 * 3

F = 9 * -3

F = -27