9000028409

Część: 
Project ID: 
9000028409
Accepted: 
1
Clonable: 
0
Easy: 
0
Find the condition which is equivalent to the fact that the equation ax2+bx+c=0 with xR and real coefficients a, b, c does not have a real solution.
(b24ac<0 and a0) or (a=b=0 and c0)
b24ac<0
b24ac<0 and a0
(b24ac<0 and a0) or (ab=0 and c0)