Question

if 1/2 is a root of the equation x square + kx -5 = 0 then find value of k​

Answer 1

Step-by-step explanation:

if 1/2 is a root of the equation x square + kx -5 = 0,

therefore, x = 1/2

(1/2)^2 + 1/2k - 5 = 0

1/4 + 1/2k -5 = 0

1-20/4 + 1/2k = 0

-19/4 + 1/2k = 0

1/2k = 19/4

k = 19/4 x 2

k = 19/2