Question

If the roots of the quadratic equation x square+ 6x + k = 0 are equal, then the value of k is​

Answer 1

Answer:

Correct option is

C

k<9

Equation x2−6x+k=0 has

discriminant D=b2−4ac

=36−4k

For real roots D>0 

⇒ 36−4k>0

⇒ k<9

Explanation:

The value of k is 9.