Question

if one of the zeroes of quadratic polynomial f(x)= 4x^{2} -8kx-9 is equal in magnitude but opposite in sign of the othe, then find the value of k

Answer 1

Let one zero of quadratic polynomial be x
Other zero =-x
Sum of zeroes=-b/a
x-x=8k/4
0=8k/4
k=0

Answer 2

Answer:

Let one zero of quadratic polynomial be x

Other zero =-x

Sum of zeroes=-b/a

x-x=8k/4

0=8k/4

k=0