Question

if one of the zeroes of the quadratic polynomial f(x) =4xsquare -8kx-9is equal on magnitude but opposite in sign of the other then find d value of k

Answer 1

acc to question the roots of question are alpha and -alpha

then

alpha + (-alpha) = -b/a = -(-8k) / 4

0 = 2k

k = 0

Hope it helps so thumbs up

Answer 2

Answer:

acc to question the roots of question are alpha and -alpha

then  

alpha + (-alpha) = -b/a = -(-8k) / 4  

0 = 2k

k = 0