Question

is 1/2is the root of x2+kx-5/4=0 then find the value of k​

Answer 1

Step-by-step explanation:

x²+kx-5/4=0

put x=1/2

(1/2)²+k(1/2)-5/4=0

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

-4+2k/4=0

2k=4

k=2