If 1/2 is a root of the equation x² +
kx-5/4 =0 then find the value of k
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We know that α + β = -b/a
αβ = c/a
Let α = 1/2
Then, (1/2) (β) = -5/4
(β) = -5/2. -eq 1
α + β = -k/1
1/2 + -5/2 = -k (since β = -5/2)
K = 4/2 = 2
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