What is the value of k in the question ?
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α + β = k/2
α - β = 1
αβ = 4
(α - β)² = (α + β)² - 4αβ
1 = k²/4 - 16
4 = k² - 64
k = √68
α - β = 1
αβ = 4
(α - β)² = (α + β)² - 4αβ
1 = k²/4 - 16
4 = k² - 64
k = √68
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