Question

if a 1/ 2 is a root of equation X square + kx + 5 by 2 is equal to zero then find the value of k

Answer 1

Given , 1/2 is a solution of the equation

( \frac{1}{2} )^{2} + k/2 - 5/4 =0]

or, 1/4 - 5/4 = -k/2

or, -k/2 = -1

or k = 2