Question

Very Short Answer Type Questions
(1 mark each)
1. If one of the zeroes of the quadratic polynomial f(x) = 4x2 - 8kx - 9 is equal in
magnitude but opposite in sign of the other, then find the value of k.​

Answer 1

$\huge{\underline{\underline{\green{\mathfrak{Answer:}}}}}$

Given

f(x) = 4x² - 8kx - 9

Let , one zero be x and the other be (-x)

We know that

sum of the zeroes = (-b) /a

=> x + (-x) = -(-8k)/4

=> x - x = 8k/4

=> 0 = 2k

=> k = 0

So, the value of k = 0