Question

If a and b are the real roots of the equation x²-kx+c=0,then the distance between the p​

Answer 1

Answer:

Since x

1

and x

2

are the roots of quadratic x

2

−kx+c=0

Thus x

1

+x

2

=k and x

1

x

2

=c

Hence, AB =

(x

1

−x

2

)

2

=

(x

1

+x

2

)

2

−4x

1

x

2

=

k

2

−4c