Question

The equation ax*+bx+c=0 ,a#0 has no real roots if
(A) b2<4ac
(B) b2>4ac
(C) b2=4ac
(D) b=4ac

Answer 1

Answer:

a quadratic equation has no real roots if discernment D = b^2 - 4ac < 0

by transposing b^2 < 4ac. option A

Answer 2

b² < 4ac

Step-by-step explanation:

ax² + bx + c has no real roots if Discriminant < 0

D < b² - 4ac

0 < b² - 4ac

b² < 4ac