L'exercice 58 urgent svp pour demain .

bonjour,

1) 3²-4(2*5) = 9-4*10 = 9-40  =31

2) 2²-4(-1*3) = 4-4*-3 = 4+12 = 16

3) 3²-4(-2*2) = 9-4*-4= 9+16 = 25