Question

If 1/2 is root of the equation x^2+kx-5/4=0,then the value of k is:

Answer 1

Answer:

k = 2

Step-by-step explanation:

x² + kx - 5/4 = 0

(1/2)² + k(1/2) - 5/4 = 0

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

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

1 + 2k - 5 = 0

2k - 4 = 0

2k = 4

k = 4/2

k = 2