Question

if one zero of quadratic polynomial p(x)=4x^2-8kx-9 is the negative of other find the value of k

Answer 1

I hope it will help you.

Answer 2

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

then  

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

                       0 = 2k

                       k = 0 

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