C

9000028408

Część: 
C
Find the condition which is equivalent to the fact that the equation ax2+bx+c=0 with x∈R and real coefficients a, b, c has two real solutions and one of the solutions is bigger than the other one.
b2−4ac>0 and a≠0
b2−4ac≠0 and a≠0
−b2a>b2−4ac2a
−b2a<b2−4ac2a

9000028403

Część: 
C
Find the condition which is equivalent to the fact that the equation ax2+bx+c=0 with x∈R and real coefficients a, b, c has two real solutions x1≠x2, x1>0, x2>0.
b2−4ac>0 and ca>0 and ba<0
a≠0 and c>0
a>0 and b<0 and c>0 and b2−4ac>0
a≠0 and c>0 and b2−4ac>0