Question

It is given that the difference between the zeros of 4x2-8kx+9 is 4 and k>0. then k =?ynkekwgWgLpwiyeh3oepj

Answer 1

Answer:

k=5/2

Explanation:

Given,. difference of roots, (a-b)= 4

sum of roots, (a+b)= 8k/4= 2k

product of roots, (ab) =9/4

A/Q

(a-b)^2= (a+b)^2 -4ab

16=4k^2-9

hence, k= 5/2 or k=-5/2

since, k>0

so, k=+5/2