Sagot :

Bonsoir,

(-2/7²) - (2/7)

= -2/49 -2/7

= -2/49 - 14/49

= -16/49

• (-2/7²) - (2/7) = (2/7²)- 2/7

= -2/7² -2/7

= -2/49 - 2/7

= -2/49 - 14/49

= -16/49