Question

find the value of K of the quadratic equation has equal roots ​

Answer 1

Step-by-step explanation:

let the roots of the quadratic equation be alpha and beta now if alpha and beta are equal we can say that alpha=beta since they have equal roots then

alpha × beta = C/A [where the equation is in the form of

Ax²+By+C]

Now, 1×1= 1/( k+4 ) [ Let alpha and beta = 1]

1 =1/( k+4 )

k+4 = 1

k = 1 - 4 = -3

So the value of k is -3