Question

If one of the zeros of the quadratic polynomial f(x)=14x2-42k2-x-9 is
negative of the other then k=​

Answer 1

Answer:

Let α(



=0) be one zero of the quadratic polynomial f(x)=14x

2

−42k

2

x−9.

Then f(α)=0

or, 14α

2

−42k

or, k

2

=0 [ Since α



=0]

or, k=0.