Réponses

2012-11-18T16:24:26+01:00

Delta= 400-336=64

x1= -20-8/8

x1= -28/8
x1= -3.5

 

x2=-20+8/8

x2=-12/8

x2=-1.5

 

 

 

2012-11-18T16:31:44+01:00

4x²+41=0

4x²=-41

x²=-41/4

x²=-10.25

x=-V10.25