Question

If 1/2 is a root of the equation x(square)+kx-5/4=0, then the value of k is :
(a) 2
(b)-2
(c)1/4
(d)1/2

Answer 1

Answer:

2

Step-by-step explanation:

(1/2)^2+k/2-5/4

1/4+k/2-5/4

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

2k-4=0

k=2