Bonjour, pouvez-vous m’aider pour cette exercice ?? Svp

Réponse :

Explications étape par étape

Bonsoir

a | b | c | ab | (-a) x c | - (ac) | abc

-5 | ... | 4 | 10 | .............. | ........ | ......

.... | ... | 2 | .... | ........... .. | -12 | -36

-5 x b = 10

b = 10/-5 = -2

-a x c = 5 x 4 = 20

-(Ac) = -(-5 x 4) = -(-20) = 20

a x b x c = -5 x -2 x 4 = 40

2eme ligne :

- (a x c) = - a x 2 = -12

a = 12/2 = 6

a x b x c = -36 = 6 x b x 2

b = -36/12

b = -3

a x b = 6 x (-3) = (-18)

-a x c = -6 x 2 = -12

a | b | c | ab | (-a) x c | - (ac) | abc

-5 | -2 | 4 | 10 | ....20....| ...20. | 40...

.6. | -3 | 2 | -18 | ...-12.. | -12 | -36