. If 1/2 is a root of the equation x2 + kx – (5/4) = 0 then the value of k is
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(1/2)²+k(1/2)-(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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