Question

3. If1/2
is a root of the equation x^2 + Kx - 5/4= 0, then find the value of K.​

Answer 1

step by step answer :

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

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

-4/4+1/2k=0

-1+1/2k=0

1/2k=1

:k=2:

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