Question

If one zero of the quadratic polynomial of f of x =4x square- 8 kx -9 is negative of the other then find the value of k.​

Answer 1

one of the zero is opposite of other then

let the zeros= A and B

A+B =0

and we know that A+B = -b/a

this gives -(-8k)/4=0

= 8k/4=0

=2k=0 therefore k=0