Réponse :

Ex4

= -125

= -243

= -343

= -256

= 81

= -25

= 128

Ex5

1. = 8

= 9

+ x 5 = 8 + 9 x 5 = 17 x 5 = 85

2. = 9

= -8

+ x 5 = 9 - 8 x 5 = 9 - 40 = -31

3. = 100

= 32

- 3 x = 100 - 3 x 32 = 100 - 96 = 4

4.   = 0.01

= -32

- 3 x = 0.01 - 3 x (-32) = 0.01 - 96 = -95.99

Voila ! J'espère que ça t'as aidé ! Bonne soirée