Question

The roots of `ax^2+bx+c=0`,a≠0 are real and unequal, if  `(b^2-4ac)` is

(a)>0    (b)=0       (c)<0       (d)none of these 

Answer 1

(a)>0 

The roots of the equation are real and unequal when  `(b^2-4ac)>0`