Question

find the value of k for quadratic equation K X square + 2K + 4 X + 9 =0 so that they have two equal roots ​

Answer 1

Answer:k=4 or k=1

Step-by-step explanation:

As they have two equal roots so the discriminant will equal to 0 . i.e bsquare -4ac =0 .

Now by substituting the values i.e b=(2k+4) -4×k×9 =0

We can get the answer