Question

Find the value of k for the quadratic equation x2-6x+k=0 so that they have two equal roots​

Answer 1

Answer:

The quadratic equations have real roots if b²-4ac=0

Here,

a=1 , b=-6 , c=k

So,

b²-4ac=0

(-6)²-4×1×k=0

36-4k=0

-4k=-36

k=-36/-4

k=9

Hope it helps you..