Sagot :

Bonjour,

1) 3(2+1/3)²

= 3( 4 +4/3 + 1/9)

= 12 + 12/3 +3/9

= 12 + 4 + 1/3

= 36/3+12/3+1/3 =

= 49/3

2) 4(−3)² −5(−2)²

= 4 *9 -5*4

= 36 -20

= 16